EPDM Rubber Sheet
High-grade EPDM Rubber sheets provide outstanding resistance to various elements and use in several applications. These are resistant to heat, weather, ozone, and UV damage. It comes in a range of thicknesses, from 1 to 20 millimeters, or customized according to your needs.
- Endure temperatures as low as -40° F and as high as 212° F
- Offers a much longer life expectancy than a standard product
- FDA, NSF / ANSI 61 certified
- Weather-resistant EPDM rubber
- Has a very good degree of chemical resistance
Your Leading EPDM Rubber Sheet Manufacturer
Weprofab EPDM Rubber Sheet exceeds the flammability, smoke, and toxicity standards set by the transportation and automotive industry. It can also be used as exterior trim, vibration-reducing padding between panels, gaskets, O-rings, etc. These EPDM sheets are an FDA-approved material suitable for the food and beverages industry. Compared to conventional EPDM Rubber, it has higher stress absorption capabilities and a longer lifespan. All products undergo strict quality testing and passed various certifications such as RoHS, REACH, CE, IEC61111, FDA, etc.
Weprofab supplies a wide range of EPDM Rubber Sheets including cellular EPDM in a closed cell, cellular EPDM in open cell format, solid EPDM in a 60a shore hardness, etc. We support color and size customization, mold customization, and fine processing to exceed your expectations. Low MOQ, fast lead time, and cost-effective products. Message us today!
Why Choose Weprofab EPDM Rubber Sheet?
- Highly versatile product
- Broad operating temperature range
- Very flexible at low and high temperatures
- Superior water and steam resistance
- Simple to size-cut and smooth finish
- Outstanding color stability
- Available in white food grade (FDA)
- High level of tolerance to alkalis, acids, and oxygenated solvents
Related Products
What Is EPDM Rubber Sheet?
EPDM stands for ethylene propylene diene monomer. EPDM rubber sheet is a vulcanized elastomer supplied as sheet, roll, strip, sponge, reinforced material, or cut parts. It serves gaskets, weather seals, liners, pads, and protective layers exposed to water and outdoor weather.
The compound and construction determine your finished part. Compare grade data, dimensions, cure system, and service conditions to establish whether two EPDM sheets are equivalent.
What Are the Benefits of EPDM Rubber Sheets?
EPDM rubber sheet is a suitable starting candidate for outdoor and water-exposed parts. Its saturated polymer backbone supports resistance to ozone, ultraviolet exposure, oxidation, and changing weather, so seals and protective parts retain useful flexibility after repeated environmental exposure.
Solid, sponge, and reinforced constructions perform different jobs in your assembly. Solid sheet provides dense cutting stock, closed-cell sponge seals variable gaps with lower closing force, and reinforcement limits stretch in selected directions.
Property balance matters more than the largest number on a data sheet. A firmer grade resists indentation but conforms less readily to an uneven flange; high tensile strength does not by itself improve a static gasket seal.
Typical EPDM Rubber Sheet Properties and Test Methods
Commercial solid EPDM sheets cover many formulations. These ranges combine published 50, 60, 70, and 80 Shore A grades for your early comparison. Production approval uses the selected grade TDS; sponge, reinforced, food-contact, and peroxide-cured sheets follow different property sets.
| Property | Representative commercial solid-sheet reference | Common test method | What the value changes |
|---|---|---|---|
| Hardness | 50–80 Shore A; 60 ±5 is a common general-purpose target | ASTM D2240 | Conformability and indentation resistance |
| Tensile strength | About 870–1,500 psi (6.0–10.3 MPa) | ASTM D412 | Resistance to pulling failure |
| Elongation at break | About 100–400% | ASTM D412 | Stretch before rupture, not sealing ability |
| Specific gravity | About 1.1–1.3 in representative solid sheets | ASTM D297 | Sheet mass and handling |
| Service temperature | About -40°F to 230°F (-40°C to 110°C) | Grade TDS and heat aging | Low-temperature flexibility and heat retention |
| Compression set | One 50–70 Shore A family specifies 25% maximum after 22 h at 70°C | ASTM D395 Method B | Recovery after prolonged compression |
| Ozone resistance | Cracking under stated concentration, strain, temperature, and time | ASTM D1149 or D1171 | Outdoor surface-crack resistance |
The published Weprofab solid EPDM rubber sheet specification lists 60 Shore A, 725 psi minimum tensile strength, 300% elongation, and -40°F to 212°F. It does not publish a grade code or complete test conditions, so the controlled grade record should add the specimen, method, tolerance, cure state, and revision.
How Property Values Change Sheet Performance
A 50 Shore A sheet conforms to small surface irregularities, while a 70 Shore A sheet provides greater resistance to edge damage and localized indentation. The selected value for your gasket must produce the required contact under the available clamping force.
Tensile strength and elongation describe a specimen pulled to failure. A bolted flange also depends on compression, surface condition, joint stiffness, and bolt loading. Compression set matters when the part remains squeezed for long periods.
For your sponge seal, check compression-deflection, recovery, water absorption, and cell-structure data. A solid-rubber Shore A value does not answer the same question.
Density, Specific Gravity and Sheet Weight
Density is mass per unit volume, not the EPDM percentage. Fillers, cure ingredients, reinforcement, and cellular structure change the weight of a rectangular solid sheet:
Mass of your sheet (kg) = length (m) × width (m) × thickness (m) × density (kg/m³)
A 1.2 m × 10 m × 5 mm roll at 1,120 kg/m³ contains about 67.2 kg of rubber before its core and packaging. Use the approved grade density for handling calculations.
EPDM Chemical Compatibility at a Glance
Chemical resistance depends on fluid, concentration, temperature, exposure time, movement, and compound. Use the table to screen your exposure, then approve the selected grade data.
| Exposure | EPDM selection direction | What to qualify |
|---|---|---|
| Water and aqueous solutions | Generally favorable compatibility | Temperature, additives, time, and compression |
| Hot water and steam | Select a qualified grade | Temperature, pressure, cure, and compression set |
| Dilute acids and alkalis | Suitable at defined concentrations | Identity, concentration, temperature, and cleaning cycle |
| Alcohols, glycols, polar fluids | Common EPDM application group | Formulation, temperature, and swelling |
| Petroleum oils, grease, fuels | Standard EPDM should not be selected by default | Compare an oil-resistant elastomer |
| Ozone, UV, outdoor weather | Established resistance to ozone and weathering | Ozone and heat-aging conditions |
What Types and Grades of EPDM Rubber Sheet Are Available?
EPDM sheet is best classified by construction, compound grade, cure system, and documented performance. Thickness and color are specification choices within those groups.
Solid and Commercial-Grade EPDM Rubber Sheet
Solid EPDM is dense and non-cellular. Commercial grades serve gaskets, liners, pads, strips, and cut flat parts, but “commercial grade” defines neither one hardness nor a standardized EPDM-content threshold. Your specification must state the selected nominal value, such as 50, 60, 70, or 80 Shore A.
Black is standard for many carbon-black-filled compounds. White and other colors serve appearance, contrast, or cleanliness requirements. Smooth, fabric-impression, and textured finishes change grip, bonding preparation, and contact behavior.
EPDM Sponge, Foam and Closed-Cell Sheet
EPDM sponge contains a cellular structure that reduces density and closing force. A closed-cell grade seals your enclosure or variable gap by compressing and recovering without an open path through the sheet.
Adhesive-backed sponge is a complete construction. Its adhesive, liner, bonding surface, installation temperature, and load belong in the sample evaluation.
Reinforced and Cloth-Inserted EPDM Rubber Sheet
Reinforced EPDM contains fabric plies that restrict stretch and improve dimensional control. For your cut part, warp and weft orientation, fabric type, ply count, and ply position influence tensile response, tear propagation, bending, and gasket bolt holes.
Specify the direction that carries the service load; values measured across the fabric do not represent the perpendicular direction.
Food-Contact and Potable-Water EPDM Grades
“Food-grade” is not a complete specification. For your repeated-use rubber article in the United States, 21 CFR 177.2600 addresses ingredients, extraction limits, food type, contact temperature, and intended use.
Potable-water projects require the named approval for the destination market and exact grade. WRAS, NSF/ANSI 61, and a food-contact declaration answer different questions. The material file should identify the grade, document holder, revision, scope, and contact conditions.
Sulfur-Cured, Peroxide-Cured and Flame-Retardant EPDM
Sulfur-cured EPDM serves general sheet products. Consider peroxide curing when heat aging and compression-set retention dominate your service conditions. Compare test results rather than rank grades by cure name.
Flame-retardant EPDM addresses a separate requirement. A complete specification identifies the fire or smoke test, thickness, mounting condition, pass criterion, and grade.
What Thicknesses, Sheet Sizes and Roll Formats Are Available?
The published Weprofab EPDM rubber sheet range is 1–20 mm thick, with custom size and cut-to-size processing. For your order, values such as 1, 3, 5, 6, 10, and 20 mm need a tolerance and measurement method.
| Specification item | Available or required description |
|---|---|
| Thickness | Published range: 1–20 mm; select nominal value and tolerance |
| Width and length | State finished sheet size or required master-roll width and length |
| Supply format | Sheet, roll, strip, pad, gasket blank, or cut-to-size part |
| Surface | Smooth, fabric-impression, or specified texture |
| Color | Black, white, or an approved custom color |
| Conversion | Slitting, straight cutting, die cutting, or another confirmed process |
| Tolerances | State acceptable thickness, width, length, hardness, and cut-feature tolerances in the quotation or drawing |
Width and roll length depend on grade, thickness, format, and handling limit. The order should separate master-material from finished-part dimensions and state whether thickness includes backing or reinforcement.
A complete specification line in your inquiry reads: 5 mm thick, 60 ±5 Shore A, black solid EPDM, 1,200 mm roll width, potable-water contact, continuous service at 80°C, with grade-specific approval documents and stated dimensional tolerances.
EPDM Rubber Sheet Specifications and Common Test Standards
Your EPDM rubber sheet specification should link every acceptance value to its method and condition so results from different procedures are not treated as equivalent.
| Specification field | Common reference | What the controlled document should state |
|---|---|---|
| Hardness | ASTM D2240 | Scale, nominal value, tolerance, specimen and conditioning |
| Tensile strength and elongation | ASTM D412 | Die, direction, units, cure state and minimum values |
| Density or specific gravity | ASTM D297 | Value, unit and exact construction |
| Compression set | ASTM D395 | Method, deflection, time, temperature and maximum set |
| Heat aging | ASTM D573 | Exposure time and temperature plus allowed property change |
| Ozone resistance | ASTM D1149 or D1171 | Ozone concentration, strain, temperature, time and crack criterion |
| Low-temperature behavior | ASTM D2137 | Test procedure, temperature and pass criterion |
| Material classification | ASTM D2000 / SAE J200 | Type, class, hardness, tensile level and suffix requirements |
| Cellular sheet | ASTM D1056 when applicable | Cell type, density or compression-deflection and water absorption |
| Dimensions | Drawing or agreed sheet tolerance standard | Thickness, width, length, edge condition and measurement point |
A TDS reports grade performance, an SDS covers safety and handling, and a COA records lot results or conformance. Regulated applications require the corresponding declarations or test documents.
Ordinary EPDM sheet has useful dielectric behavior, but your electrical safety application requires a dedicated grade tested for its voltage and standard. The insulating specification therefore identifies dielectric strength, volume resistivity, thickness, class, and certification.
How Does EPDM Compare with Other Rubber Sheet Materials?
Material selection becomes clearer when the dominant exposure is identified first. The table below gives a practical starting direction; the final grade still follows the actual fluid, temperature, movement, and test requirements.
| Material | Prioritize it when | Main limitation to check |
|---|---|---|
| EPDM | Outdoor weather, ozone, water, hot-water systems and many polar fluids dominate | Petroleum oils, fuels and aromatic solvents |
| NBR | Petroleum oils, lubricants and fuel-related service dominate | Outdoor ozone and weather resistance without suitable formulation |
| Neoprene | The part needs a balance of weather resistance, moderate oil resistance and general mechanical performance | Severe oil, fuel or high-temperature exposure |
| Silicone | A wider temperature window, low-temperature flexibility, clean appearance or documented contact grade dominates | Tear, abrasion, compression behavior and cost |
| Natural rubber | High resilience, abrasion resistance and dynamic mechanical performance dominate | Ozone, outdoor weather, petroleum oil and elevated temperature |
For your material shortlist, compare EPDM for an outdoor water gasket, NBR for an oil splash guard, silicone for a high-temperature clean-contact seal, and natural rubber for a high-wear flexible skirt.
What Are EPDM Rubber Sheet Uses and Applications?
Gaskets, Seals and Fabricated Parts
Solid EPDM gasket sheet is cut into flange gaskets, panel seals, washers, liners, strips, and custom flat parts. Sponge grades serve enclosure seals and larger gaps that close under lower force. The drawing should connect the chosen construction to the medium, operating temperature, compression, surface condition, and acceptance test.
Conveyor, Production-Line and Protective Components
EPDM sheet is converted into skirting, deflectors, sealing pads, protective strips, and isolation parts. For your production equipment, dynamic contact adds abrasion, friction, fastening, edge wear, and movement. A continuously moving component needs assembly-level qualification; a static strip uses a different property balance.
Outdoor, Water, HVAC and General Industrial Applications
Weather-resistant EPDM sheet is used around HVAC panels, pumps, piping, access covers, outdoor enclosures, building joints, equipment pads, and water-system components. These applications use the material’s weather, ozone, and water resistance while relying on the selected grade for the required temperature and chemical exposure.
Where electrical safety is part of your part’s function, replace general-purpose sheet with a purpose-tested insulating grade. Ordinary cushioning is not verified dielectric protection.
What Affects EPDM Rubber Sheet Price?
EPDM rubber sheet price changes with grade, construction, dimensions, color, reinforcement, adhesive backing, compliance, quantity, and conversion work. Cost comparisons are meaningful only when those fields match across offers for a sheet, square meter, kilogram, or finished part.
Your cut-part price includes tooling, tolerance control, material yield, liner handling, inspection, packaging, and batch documentation—not only base material.
Final Thoughts
EPDM is most valuable when its grade data matches your finished part. Send Weprofab the drawing, contact medium, operating temperature, dimensions, hardness, quantity, backing or cutting requirements, and required compliance documents. We review the material route, prepare a sample or production specification, provide available TDS/SDS and test records, and confirm cutting and packaging options.
