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- Paraffin Sealing Film
- Lab Supplies
Description
Key Features
Specifications
Storage & Handling
FAQs
Product Description
Paraffin sealing film is one of the most commonly used items in the modern laboratory — an essential all-purpose colorless, moisture-proof film produced from a polyolefins and paraffin wax blend with a paper backing. The film molds to almost any surface, creating a flexible, self-sealing barrier that protects laboratory vessels from moisture loss while simultaneously maintaining gas permeability.
This convenient, flexible, and self-sealing film is an essential item in healthcare, pharmaceutical, and research laboratories for sealing and protecting beakers, flasks, tubes, petri dishes, and more. Available in four roll formats to match the scale of your application — from the compact 1 inch × 50 ft roll for bench use to the 20 inch × 50 ft wide roll for larger surface sealing applications.
Available Roll Formats
30 × 15,000 mm
~1 in × 50 ft
4 rolls/box | 96 rolls/case
50 × 60,000 mm
~2 in × 197 ft
1 roll/box | 24 rolls/case
100 × 38,000 mm
~4 in × 125 ft
1 roll/box | 12 rolls/case
500 × 15,000 mm
~20 in × 50 ft
1 roll/box | 4 rolls/case
Applications
Sealing Flasks
Sealing Tubes
Sealing Petri Dishes
Sealing Beakers
Vessel Protection
Moisture Control
Sample Storage
Lab Bench Use
Key Features & Benefits
- Polyolefins and paraffin wax blend — with paper backing for easy dispensing and handling directly from the roll
- Colorless and transparent — allows visual inspection of vessel contents without removing the film seal
- Moisture-proof — keeps moisture loss to a minimum, protecting the contents of laboratory vessels during storage and incubation
- Gas permeable — allows passive gas exchange through the film — important for cell culture and microbial incubation applications where CO₂ and O₂ exchange is required
- Self-sealing — bonds to itself and to almost any surface by hand pressure and gentle stretching — no adhesive required
- Flexible and stretchable — molds to irregular shapes and curved surfaces including round flask necks, tube caps, and petri dish rims
- All-purpose compatibility — seals beakers, flasks, tubes, petri dishes, microtiter plates, bottles, and virtually any laboratory vessel
- Four roll formats — 1 in, 2 in, 4 in, and 20 in widths to match bench use, standard sealing, and large-surface applications
- Essential for healthcare, pharmaceutical, and research labs — one of the most widely used consumables across all laboratory settings
⚠️ Not autoclavable — paraffin film will melt under autoclave conditions. Do not use in applications requiring heat sterilization.
Specifications
| Specification | Detail |
|---|---|
| Material | Polyolefins and paraffin wax blend with paper backing |
| Color | Colorless — transparent |
| Moisture Resistance | ✓ Moisture-proof |
| Gas Permeability | ✓ Gas permeable |
| Self-Sealing | ✓ Yes — no adhesive required |
| Autoclavable | ⚠️ Not Autoclavable |
| Sterile | ⚠️ Non-Sterile |
| Roll Format 1 | 30 × 15,000 mm (~1 in × 50 ft) | 4 rolls/box, 96 rolls/case |
| Roll Format 2 | 50 × 60,000 mm (~2 in × 197 ft) | 1 roll/box, 24 rolls/case |
| Roll Format 3 | 100 × 38,000 mm (~4 in × 125 ft) | 1 roll/box, 12 rolls/case |
| Roll Format 4 | 500 × 15,000 mm (~20 in × 50 ft) | 1 roll/box, 4 rolls/case |
Storage & Handling
- Store in original packaging away from direct sunlight, heat sources, and UV exposure
- Maintain storage temperature between 15°C and 30°C (59°F – 86°F) — do not store in warm environments as film may become tacky
- Keep away from excessive humidity to prevent the paper backing from becoming difficult to remove
- To use — tear or cut the required length from the roll, remove the paper backing, and stretch the film over the vessel opening by hand
- Apply with gentle stretching and overlapping for a secure, self-sealing bond — film adheres to itself without adhesive
- Do not use near open flames or heat sources — paraffin film is flammable
- Do not autoclave — film will melt under autoclave conditions
- Not suitable for use with strong organic solvents — verify compatibility with your specific application before use
⚠️ Flammable — keep away from open flames and heat sources. Not autoclavable. Not compatible with strong organic solvents.
Frequently Asked Questions
What size roll should I choose?
The 1 inch (30 mm) roll is the standard choice for sealing individual tubes, microcentrifuge tubes, and small flask necks — the most common bench use format. The 2 inch (50 mm) roll suits medium flask necks and petri dishes. The 4 inch (100 mm) roll is ideal for larger flasks, bottles, and multi-well plates. The 20 inch (500 mm) wide roll is used for covering large surface areas such as trays, large containers, and applications requiring wide sheet coverage.
How does paraffin sealing film self-seal without adhesive?
Paraffin film bonds to itself through the combination of the paraffin wax content and gentle hand pressure and stretching. When you stretch the film slightly and press it against itself or a clean smooth surface, the paraffin creates a tacky self-adhesive bond without any added adhesive. The bond can be removed cleanly and the film repositioned, making it a convenient, residue-free sealing option for laboratory vessels.
Is paraffin film gas permeable or airtight?
Paraffin sealing film is gas permeable — it allows passive gas exchange while providing a moisture barrier. This makes it suitable for cell culture flasks, microbial culture tubes, and other applications where CO₂ and O₂ exchange is required during incubation. For applications requiring a fully airtight seal, an alternative sealing method such as adhesive film or snap caps should be used.
Can paraffin film be used in the freezer?
Yes — paraffin sealing film maintains its flexibility and sealing performance at freezer temperatures, making it suitable for sealing tubes and vessels during short-term freezer storage. For long-term ultra-low temperature storage, verify that the film remains adequately sealed at your specific storage temperature and consider an additional sealing method for critical samples.
Is paraffin sealing film compatible with organic solvents?
Paraffin sealing film has limited compatibility with strong organic solvents — solvents such as acetone, chloroform, and toluene can dissolve or degrade the film. For applications involving organic solvents, verify compatibility with your specific solvent before use and consider alternative sealing materials such as PTFE tape for solvent-resistant applications.
Description
Key Features
Specifications
Storage & Handling
FAQs
Product Description
Paraffin sealing film is one of the most commonly used items in the modern laboratory — an essential all-purpose colorless, moisture-proof film produced from a polyolefins and paraffin wax blend with a paper backing. The film molds to almost any surface, creating a flexible, self-sealing barrier that protects laboratory vessels from moisture loss while simultaneously maintaining gas permeability.
This convenient, flexible, and self-sealing film is an essential item in healthcare, pharmaceutical, and research laboratories for sealing and protecting beakers, flasks, tubes, petri dishes, and more. Available in four roll formats to match the scale of your application — from the compact 1 inch × 50 ft roll for bench use to the 20 inch × 50 ft wide roll for larger surface sealing applications.
Available Roll Formats
30 × 15,000 mm
~1 in × 50 ft
4 rolls/box | 96 rolls/case
50 × 60,000 mm
~2 in × 197 ft
1 roll/box | 24 rolls/case
100 × 38,000 mm
~4 in × 125 ft
1 roll/box | 12 rolls/case
500 × 15,000 mm
~20 in × 50 ft
1 roll/box | 4 rolls/case
Applications
Sealing Flasks
Sealing Tubes
Sealing Petri Dishes
Sealing Beakers
Vessel Protection
Moisture Control
Sample Storage
Lab Bench Use
Key Features & Benefits
- Polyolefins and paraffin wax blend — with paper backing for easy dispensing and handling directly from the roll
- Colorless and transparent — allows visual inspection of vessel contents without removing the film seal
- Moisture-proof — keeps moisture loss to a minimum, protecting the contents of laboratory vessels during storage and incubation
- Gas permeable — allows passive gas exchange through the film — important for cell culture and microbial incubation applications where CO₂ and O₂ exchange is required
- Self-sealing — bonds to itself and to almost any surface by hand pressure and gentle stretching — no adhesive required
- Flexible and stretchable — molds to irregular shapes and curved surfaces including round flask necks, tube caps, and petri dish rims
- All-purpose compatibility — seals beakers, flasks, tubes, petri dishes, microtiter plates, bottles, and virtually any laboratory vessel
- Four roll formats — 1 in, 2 in, 4 in, and 20 in widths to match bench use, standard sealing, and large-surface applications
- Essential for healthcare, pharmaceutical, and research labs — one of the most widely used consumables across all laboratory settings
⚠️ Not autoclavable — paraffin film will melt under autoclave conditions. Do not use in applications requiring heat sterilization.
Specifications
| Specification | Detail |
|---|---|
| Material | Polyolefins and paraffin wax blend with paper backing |
| Color | Colorless — transparent |
| Moisture Resistance | ✓ Moisture-proof |
| Gas Permeability | ✓ Gas permeable |
| Self-Sealing | ✓ Yes — no adhesive required |
| Autoclavable | ⚠️ Not Autoclavable |
| Sterile | ⚠️ Non-Sterile |
| Roll Format 1 | 30 × 15,000 mm (~1 in × 50 ft) | 4 rolls/box, 96 rolls/case |
| Roll Format 2 | 50 × 60,000 mm (~2 in × 197 ft) | 1 roll/box, 24 rolls/case |
| Roll Format 3 | 100 × 38,000 mm (~4 in × 125 ft) | 1 roll/box, 12 rolls/case |
| Roll Format 4 | 500 × 15,000 mm (~20 in × 50 ft) | 1 roll/box, 4 rolls/case |
Storage & Handling
- Store in original packaging away from direct sunlight, heat sources, and UV exposure
- Maintain storage temperature between 15°C and 30°C (59°F – 86°F) — do not store in warm environments as film may become tacky
- Keep away from excessive humidity to prevent the paper backing from becoming difficult to remove
- To use — tear or cut the required length from the roll, remove the paper backing, and stretch the film over the vessel opening by hand
- Apply with gentle stretching and overlapping for a secure, self-sealing bond — film adheres to itself without adhesive
- Do not use near open flames or heat sources — paraffin film is flammable
- Do not autoclave — film will melt under autoclave conditions
- Not suitable for use with strong organic solvents — verify compatibility with your specific application before use
⚠️ Flammable — keep away from open flames and heat sources. Not autoclavable. Not compatible with strong organic solvents.
Frequently Asked Questions
What size roll should I choose?
The 1 inch (30 mm) roll is the standard choice for sealing individual tubes, microcentrifuge tubes, and small flask necks — the most common bench use format. The 2 inch (50 mm) roll suits medium flask necks and petri dishes. The 4 inch (100 mm) roll is ideal for larger flasks, bottles, and multi-well plates. The 20 inch (500 mm) wide roll is used for covering large surface areas such as trays, large containers, and applications requiring wide sheet coverage.
How does paraffin sealing film self-seal without adhesive?
Paraffin film bonds to itself through the combination of the paraffin wax content and gentle hand pressure and stretching. When you stretch the film slightly and press it against itself or a clean smooth surface, the paraffin creates a tacky self-adhesive bond without any added adhesive. The bond can be removed cleanly and the film repositioned, making it a convenient, residue-free sealing option for laboratory vessels.
Is paraffin film gas permeable or airtight?
Paraffin sealing film is gas permeable — it allows passive gas exchange while providing a moisture barrier. This makes it suitable for cell culture flasks, microbial culture tubes, and other applications where CO₂ and O₂ exchange is required during incubation. For applications requiring a fully airtight seal, an alternative sealing method such as adhesive film or snap caps should be used.
Can paraffin film be used in the freezer?
Yes — paraffin sealing film maintains its flexibility and sealing performance at freezer temperatures, making it suitable for sealing tubes and vessels during short-term freezer storage. For long-term ultra-low temperature storage, verify that the film remains adequately sealed at your specific storage temperature and consider an additional sealing method for critical samples.
Is paraffin sealing film compatible with organic solvents?
Paraffin sealing film has limited compatibility with strong organic solvents — solvents such as acetone, chloroform, and toluene can dissolve or degrade the film. For applications involving organic solvents, verify compatibility with your specific solvent before use and consider alternative sealing materials such as PTFE tape for solvent-resistant applications.
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