91 Products found
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Multiple Options

The Gas Permeable Clear Heat Seal is based on the Clear Heat Seal, with the addition of 3 mm slits across the width of the seal. These slits render the seal gas permeable, whilst retaining evaporation to a minimum, compared to the use of lids. The Gas Permeable Clear Heat Seal is compatible with polypropylene, polyethylene, polystyrene and cyclic olefin copolymer (COC) plates. The seal can be removed by peeling, or it can be pierced with a pipette tip manually, using a liquid handling robot or with a Pierce Plate. It can be used for insect and seed storage, as it enables gas exchange, whilst providing an inert surface with no adhesive to interfere with the well contents.

  • Type: Rolls or Sheets
  • Size: 500 m x 78 mm (4,200 Seals) or 125 x 78 mm (100 Sheets)
  • Seal Integrity Range: -80 °C to 110 °C
  • Peelable
  • Free from DNase, RNase, Human Geonomic DNA & Endotoxin/Pyrogen
  • Sold as 1 Roll/Case or 100 Sheets/Case


Multiple Options

X-Pierce™ Pre-Cut Pierceable Sealing Films are useful for protecting contents of plates from contamination during multiple manual reagent additions over time. They are 89 µm thick vinyl with a 18 µm thick adhesive layer, designed for temporary protection from contamination and evaporation for samples in 96-well plates. A precut "X" over each well creates four flaps that easily bend downward when pushed by a robotic probe or pipet tip, allowing sample access without coring or adhesive fouling. A thin adhesive layer and special hairline cuts separating the X-Pierce flaps combine to prevent probes from contacting adhesive and becoming occluded. The flaps return to their original position after sampling for continued protection. For long-term sample protection after sampling, a continuous sealing film should be applied as a second layer. 

  • Size - 79.4 x 145.5 mm
  • Sterile or Non-Sterile
  • Thickness - 3.5 Mil
  • Material - Vinyl
  • Pierceable
  • Recommended Temperatures between -40 °C to +90 °C
  • Sold as 100 or 50 a Pack


Multiple Options

A 140 µm thick hydrophobic porous rayon sealing film including medical-grade adhesive for tissue culture plates, bio-blocks, and 96-well plates where gas exchange is necessary for cell or bacterial growth. AeraSeal sealing films minimize cross-contamination, spillage and evaporation. They allow uniform air and CO2 exchange for all wells, unlike plate lids which favor exchange for wells near the plate edges. Dimensions: 82.6 by 142.9 mm for standard-size tissue culture plates.

  • Size - 82.6 x 142.9 mm
  • Non-Cytotoxic
  • Highly Gas Permeable
  • Easily Pierceable with Pipet Tips or Pipets for Sample Recovery
  • Recommended for Temperatures from -20 °C to +80 °C
  • Sold as 100 or 50 a Pack


Multiple Options

A 36 µm soft non-permeable aluminum foil sealing film with 28 µm layer of strong medical-grade acrylic adhesive, AlumasSeal II™ sealing films eliminate the need for heat-sealing devices or mats during thermal cycling. Compared to other aluminum foils, AlumaSeal II™ has less tendency to roll back on itself when removing the backing paper and conforms well to the plate during application.

  • Size - 82.6 x 146.1 mm
  • Length - 125.4 (Between the Perforations with End Tabs Removed)
  • Heat & Cold Resistant for Temperatures from -80 °C to +120 °C
  • Easily Pierceable with Single or Multichannel Pipettors and Robotic Probs
  • Certified DNase, RNase & Nucleic-Acid-Free
  • Sold as 100 or 50 a Pack


Multiple Options

Classic ThermalSeal® Sealing Films for PCR is a 50 µm heat-resistant polypropylene sealing film with a 25 µm layer of acrylic adhesive designed for thermal cycling applications. 

  • Sterile or Non-Sterile
  • Size - 79.4 x 135.1 mm
  • Length - 123.1 mm (Between Perforations with End Tabs Removed)
  • NOT Pierceable 
  • Heat Resistant Between -40℃ to +120℃
  • Certified DNase, RNase & Nucleic-Acid Free
  • Sold as 100/Pack


Multiple Options

The Universal Peel Heat Seal is a laminate seal compatible with PP, PE, PS, COC and PC plates, providing the highest flexibility in plate material choice. Sample access is possible by peeling from the compatible materials and also by piercing the seal with needles, but not with plastic tips. It is resealable by applying another Universal Peel Heat Seal directly on top of a previously pierced seal. It also forms a complete seal to a plate enabling low temperature uses as well as high temperature uses, such as PCR (when used with a pressurized heated lid). The seal demonstrates moderate solvent resistance. Use of Universal Peel Heat Seal makes roll changes unnecessary even for customers using different microplate materials, because with minor adjustments of sealing parameters all common microplate materials can be sealed to.

  • Type: Rolls
  • Size: 610 m x 78 mm (5,000 Seals) or 500 m x 115 mm (6,250 Seals)
  • Seal Integrity Temperature Range: -80 °C to 90 °C (110 °C when used with a Pressurized Heated Lid)
  • Peelable
  • Autoclavable (121 °C)
  • Free from DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen
  • Sold as 1 Roll/Case 


Multiple Options

The Clear Heat Seal Plus is a clear polymer film forming a peelable seal to polypropylene, polystyrene and cyclic olefin copolymer (COC) plates. The excellent tensile strength of this seal enables its use for sealing of microplates during homogenization or disruption of seeds or other material such as bead mill applications. The Clear Heat Seal Plus forms a complete seal to a plate also enabling short term sample storage and is thicker than our standard Clear Heat Seal for application requiring high tensile strength but is not as suitable for optical applications due to decreased transmission through the thicker sealing layers.

  • Type: Rolls
  • Size: 250 m x 78 mm (2,100 Seals) or 250 m x 115 mm (3,140 Seals)
  • Seal Integrity Range: -80 °C to 80 °C (110 °C with a Pressurized Heated Lid)
  • Peelable
  • Free from DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen
  • Sold as 1 Roll/Case


Multiple Options

Pierce Heat Seal Strong is compatible with polypropylene and COC plates. This seal is peelable from COC plates and gives a weld seal to polypropylene plates. It demonstrates good solvent resistance and can be used for low temperature and room temperature compound storage in DMSO and organic solvents. The seal can be pierced with a pipette tip manually, or by a liquid handling robot. Applications include PCR, sample shipping, low and room temperature compound storage with DMSO and other organic solvents.

  • Roll Size: 610 m x 78 mm (5,000 Seals) or 500 m x 115 mm (6,200 Seals)
  • Seal integrity range: -20 °C to 120 °C
  • Pierceable
  • Free From DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen


Multiple Options

Suitable for light-sensitive samples, peelable, pierceable

Heat Sealing offers a 100% effective method for plate sealing for a complete seal integrity, as well as being quick and cost effective.

Our Black Seal is a foil-based heat seal which is coated on the sealing surface with a low fluorescence black pigment. This renders it ideal for manual, semi-automated, and automated heat sealing of light-sensitive samples, and for fluorescence and luminescence detection applications.

Download Heat Seal Selection Guide

Download Heat Seal Comparison Table


Multiple Options

Our Gas Permeable Heat Seal Mark 2 is made from a woven material and is designed for use in cell culture, due to its porous nature. The small pore size (20 g/m², whilst evaporation is reduced to a minimum. It can be removed by peeling, or it can be pierced with a pipette tip manually, using a liquid handling robot or with a pierce plate. Gas Permeable Heat Seal Mark 2 can be utilized for effective overnight incubations, during which it demonstrates significant reductions in evaporation compared to lids. This seal is available as sheets, for use with manual and semi-automated sealers, such as our 4s3™ Semi-Automatic Sheet Heat Sealer. Also available in multiple roll formats compatible with specified automated heat sealers, such as our a4S Automatic Roll Heat Sealer.

  • Type: Rolls or Sheets
  • Moisture Vapor Transmission Rate: 20 g/m²/day
  • Seal Integrity Range: -20 °C to 80 °C
  • Gas Permeability Rate: 180 m³/m²/day
  • Autoclavable: 121 °C
  • Removing - Peelable or Pierceable
  • Seals: Polypropylene, Polystyrene & Cyclic Olefin Copolymer Plates


Multiple Options

Our Thermal Bond Heat Seal is a heavy duty laminate foil seal suitable for providing a very strong, but peelable seal. The seal is compatible with polypropylene plates to provide a high degree of sample protection. It demonstrates very good solvent resistance and can be used for very low temperature compound storage, in DMSO and organic solvents, and long term room temperature storage such that it is recommended as suitable for sample transportation

  • Type: Sheets or Rolls
  • Seal integrity range: -200 °C to 110 °C
  • Autoclavable (121 °C)
  • Peelable
  • High Solvent Resistance
  • Free from DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen


Multiple Options

Our DMSO Resistant Peel Heat Seal is a foil seal compatible with polypropylene and forming an excellent seal to cyclic olefin copolymer (COC) plates. The solvent resistance of this seal enables its use for low and room temperature compound storage in Dimethyl Sulfoxide (DMSO) and organic solvents. 100% DMSO can be stored at room temperature for 12 months without deterioration of the seal. It forms a weld seal to polyethylene plates and cannot be peeled off. Access is by piercing using a blade, needle, or a 4titude pierce plate.

  • Type: Sheets or Rolls
  • Seal Integrity Range: -80 °C to 40 °C
  • Peelable Seal to Polypropylene & COC
  • Permanent Seal to Polyethylene


Multiple Options

The Clear Heat Seal 3730 is an optically clear polyester backed film, forming a pierceable seal to polypropylene, polyethylene, polystyrene and cyclic olefin copolymer (COC) plates. The optical clarity of this seal enables its use for sealing plates required for imaging use, including fluorescent detection methods such as qPCR and colorimetric assays. Its pierceability renders it useful for automation and for use on needle, capillary and tip based liquid handling systems. It is effective on the ABI® 3730 capillary sequencer, removing the need for the use of expensive septa mats. The Clear Heat Seal 3730 forms a complete seal to a plate enabling moderately low and high temperature uses, including PCR when using a pressurized heated lid thermal cycler. It demonstrates a moderate solvent resistance and can be utilized for short term compound storage.

  • Type: Rolls or Sheets
  • Permanent Seal
  • Seal integrity range: -20 °C to 80 °C (or 110 °C when used with pressurized heated PCR lid)
  • Free from DNase, RNase, Human Henomic DNA, and Endotoxin/Pyrogen


Multiple Options

The Clear Weld Heat Seal Mark 2 is an optically clear polymer film forming a permanent seal to polypropylene plates. The optical clarity of this seal enables its use for sealing plates required for imaging use, including fluorescent detection methods such as qPCR and colorimetric assays. The Clear Weld Heat Seal Mark 2 forms a complete seal to a plate, enabling both low and very high temperature uses, including low temperature storage and high temperature incubations. This seal is suitable for PCR/qPCR, even without the use of a pressurized heated lid, and is 100% effective when used in water bath thermal cyclers. The permanent nature of this 100% effective seal renders it suitable for the storage and disposal of hazardous material. Clear Weld Heat Seal Mark 2 demonstrates a good solvent resistance and can be utilized for long term compound storage. Samples can be accessed by pre-piercing with a blade, needle or our pierce plate.

  • Type: Rolls or Sheets
  • Free from DNase, RNase, Human Genomic DNA, and Endotoxin/Pyrogen
  • Seal Integrity Range: -80 °C to 110 °C
  • Autoclavable (121 °C)
  • Permanent Seal
  • Non-Peelable
  • Difficult to Pierce


Multiple Options

This strong adhesive seal was developed to facilitate easy sample removal with a manual or automated system. The seal is optically clear, being made from a transparent polyester film, and has a strong adhesive applied across the underside of the seal, except for 96 round windows which align to the 96 wells of a plate. The optical windows are cross-cut, allowing for easy access to the sample wells with a tip or probe with minimal pressure.

  • Type: Sheets
  • Size: 135 x 77 mm
  • Seal integrity range: -20 °C to 110 °C
  • Free From DNase, RNase & Human Genomic DNA
  • Non-Sterile
  • Pierceable
  • Peelable
  • Sold as 100 Sheets


Multiple Options

These unique seals combine the strong sealing integrity of a PCR seal with improved optical properties, thanks to the 96 adhesive-free windows. The seal is made of a durably transparent polyester film, and a strong adhesive is applied across the seal, apart from the 96 round windows. The Q-Stick™ seal is recommended for qPCR and other optical applications, such as fluorescence or colorimetric measurements.

  • Type: Sheets
  • Size: 133 x 76 mm
  • Seal Integrity Range: -20 °C to 110 °C
  • Free from DNase, RNase & Human Genomic DNA
  • Peelable
  • Non-Pierceable
  • Sold as 100 Sheets


Multiple Options

A strong peelable and pierceable adhesive foil seal, suitable for high temperature incubations

This aluminium foil seal has a strong acrylic adhesive which produces a seal of high integrity. It was developed for PCR and other high temperature applications due to its effectiveness in preventing sample evaporation.

The PCR Foil Seal is pierceable; when pierced, the foil tears in an irregular manner which prevents the formation of a vacuum.

It also has perforated end tabs for easy application and removal by peeling.

For all adhesive seals, the best sealing results are achieved using the hand held Adhesive Seal Roller (4ti-0502).

Download Adhesive Seal Comparison Table


Multiple Options

Our Polystyrene Foil Heat Seal produces a stronger seal to polystyrene plates than our standard foil heat seal. It is compatible with polypropylene, polystyrene and polycarbonate plates. This seal demonstrates moderate solvent resistance and can be used for low temperature compound storage, in DMSO and organic solvents, and short term room temperature storage. Polystyrene foil heat seal can be pierced with a pipette tip manually, by a liquid handling robot, using the 4titude pierce plate, or it can be removed by peeling. It can be resealed by applying another polystyrene foil heat seal directly on top of a previously pierced seal.

  • Type: Sheets or Rolls
  • Seal Integrity range: -20 °C to 110 °C
  • Free from DNase, RNase, Human Genomic DNA, and Endotoxin/Pyrogen
  • Pierceable
  • Peelable
  • Resealable Foil on Foil


Multiple Options

The Clear Heat Seal is an optically clear laminate film forming a peelable seal to polypropylene, polyethylene, polystyrene, polycarbonate and cyclic olefin copolymer plates. Samples can also be accessed by pre-piercing with a blade, needle or the 4titude pierce plate. The optical clarity of this seal enables its use for sealing plates required for imaging use, including fluorescent detection methods such as qPCR and colorimetric assays. The Clear Heat Seal forms a complete seal to a plate enabling both low temperature uses, including low temperature storage, and high temperature uses, such as PCR (when used with a pressurized heated lid). This seal demonstrates moderate solvent resistance and can be utilized for short term compound storage at room temperature. 

  • Type: Sheets or Rolls
  • Seal Integrity Range: -80 °C to 80 °C (to 110 °C with a Pressurized Heated PCR Lid)
  • Optically Clear
  • Peelable
  • Free from DNase, RNase, Human Genomic DNA, and Endotoxin/Pyrogen


Multiple Options

This Foil Heat Seal is compatible with polypropylene and polystyrene plates. It also demonstrates moderate solvent resistance and can be used for low temperature compound storage in DMSO and organic solvents and short term room temperature storage. The foil heat seal can be pierced with a pipette tip, manually or by liquid handling robots, or it can be removed by peeling. It can be resealed by applying another foil heat seal directly on top of a previously pierced seal.

  • Type: Sheets or Rolls
  • Seal Integrity Range: -20 °C to 110 °C
  • Autoclavable (121 °C)
  • Pierceable
  • Peelable
  • Resealable
  • Free from DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen


Multiple Options

Pierce Heat Seal is compatible with polypropylene and polystyrene plates. This seal demonstrates good solvent resistance and can be used for low temperature and room temperature compound storage in DMSO and organic solvents. The Pierce Heat Seal can be pierced with a pipette tip manually, or by a liquid handling robot. This seal can be resealed by applying another Pierce Seal straight on top of a previously pierced seal.

  • Type: Rolls, Sample Rolls or Sheets
  • Seal integrity range: -20 °C to 120 °C
  • Autoclavable (121 °C)
  • Free from DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen
  • Pierceable
  • Resealable


Multiple Options

Our Peel Heat Seal is a laminate seal compatible with polypropylene plates. It can be removed from polypropylene plates by peeling, even with a plate which has been removed directly from -80 °C storage. The Peel Heat Seal forms a complete seal to a plate enabling very low temperature uses, including very low temperature storage, and high temperature uses, such as PCR (when used with a pressurized heated lid). The seal demonstrates moderate solvent resistance and can be utilized for short term compound storage at room temperature.

  • Type: Sheets, Rolls or Sample Rolls
  • Seal Integrity Range: -80 °C to 90 °C (110 °C When used with a Pressurized Heated Lid)
  • Autoclavable (121°C)
  • Free from DNase, RNase, Human Genomic DNA & Endotoxin/Pyrogen
  • Peelable from Polypropylene & COC Plates


Multiple Options

The Air-O-Seal is a gas permeable adhesive seal which seals assay and tissue culture plates, microplates and storage plates. It prevents evaporation and contamination whilst enabling cells to breathe. It is made of a non-woven fiber with an acrylate adhesive layer for effective sealing. The seal has a low moisture transfer rate and a porosity enabling gas exchange. Due to its paper-based material it should not be used in wet conditions. The seal is suitable for cell culture and enables long term culture with significantly reduced evaporation.

  • Type: Sheets
  • Sterile or Non-Sterile
  • Size: 135 x 80 mm
  • Seal Integrity Range: -20 °C to 40 °C
  • Gas Permeability Rate: 8,900 m³/m²/day
  • Air Porosity: 10 sec/100 cc/in²
  • Moisture Vapor Transmission Rate (Very Low): 4,200 g/m²/day
  • Peelable
  • RNase/DNase Free
  • Sold as 100 Sheets 


Multiple Options

This unique seal has optically clear adhesive free windows; these windows can be imaged through, and also allow for gas exchange. The clear film is made of a porous material which allows for a uniform air and CO₂ exchange, whilst acting as a moisture barrier and preventing evaporation. The seal is coated with a strong adhesive (except for the optical windows) which has a high sealing integrity. This ensures a reliable seal and prevention of well-to-well contamination. The gas permeable seal enables long term incubations without intervention, whilst allowing for imaging through the optically clear windows. This can reduce the risk of sample contamination, evaporation and can improve your experimental workflow. Use of this seal within plate readers can prevent moisture release into the sensitive equipment.

  • Type: 24, 96 or 384 Sheets
  • Seal Integrity Range: -20 °C to 80 °C
  • Gas Permeability Rate: 0.6 m³/m²/day
  • Moisture Vapor Transmission Rate: 1 g/m²/day
  • Pierceable
  • Peelable
  • Opitcally Clear for Imaging
  • Sterile
  • Free from RNase & DNase