Rubber Gasket Sheet UK: Materials, Grades & Where to Buy — Complete 2026 Guide
Last updated: May 2026 — Expanded with custom cutting options, pressure ratings, temperature range quick-reference, and additional buyer FAQ based on common UK engineer queries.
Rubber Gasket Sheet UK: Which Grade Do You Need?
Rubber gasket sheet is flat rubber material cut to precise dimensions for sealing flanges, pipe joints, access panels, machinery housings and industrial equipment. The correct grade depends entirely on the medium being sealed — oil, water, steam, chemicals, food — and the operating temperature range. Using the wrong compound is one of the most common and costly mistakes in gasket specification. This guide covers all major grades available from UK suppliers, with selection criteria and standards references.
Common Rubber Gasket Sheet Grades
NBR (Nitrile) Gasket Sheet
NBR nitrile rubber is the most widely used gasket material for oil and fuel applications. It resists petroleum products, hydraulic fluids, mineral oils, diesel, and most aliphatic hydrocarbons. Temperature range: -40°C to +120°C. Suitable for: automotive, engineering, hydraulic systems, compressors, gearboxes. Shore hardness typically 60–70°. Browse our nitrile rubber sheet range.
EPDM Gasket Sheet
EPDM (ethylene propylene diene monomer) gasket rubber excels in water, steam, and outdoor weathering applications. Outstanding UV, ozone and weather resistance. Temperature range: -50°C to +150°C. Suitable for: water mains, HVAC systems, roofing, outdoor enclosures, potable water contact. WRAS-approved grades available.
Neoprene (CR) Gasket Sheet
Neoprene polychloroprene offers balanced performance across oil, weather and moderate chemical resistance. Temperature range: -35°C to +120°C. Suitable for: marine applications, refrigerants, mild acids, building services, window and door gaskets. Good fire resistance.
Silicone Gasket Sheet
Silicone rubber provides exceptional high-temperature sealing. Temperature range: -60°C to +230°C (HT grades to +300°C). FDA-compliant grades available for food contact. Suitable for: ovens, food processing equipment, aerospace, pharmaceutical, medical devices. Not suitable for petroleum or strong acids.
SBR Gasket Sheet
SBR (styrene-butadiene) is a cost-effective general-purpose gasket material for low-pressure water and non-aggressive media. Temperature range: -30°C to +80°C. Not suitable for oils. Widely used for: water systems, low-pressure flanges, vibration damping, general engineering.
Natural Rubber Gasket Sheet
Natural rubber offers excellent elasticity and tear resistance for moderate-pressure applications. Temperature range: -50°C to +80°C. Suitable for: water, dilute acids and alkalis, abrasion-resistant sealing. Not suitable for petroleum products.
Temperature Range Quick Reference
| Rubber Grade | Min. Temp | Max. Temp | Steam Rated? |
|---|---|---|---|
| NBR (Nitrile) | -40°C | +120°C | No |
| EPDM | -50°C | +150°C | Yes (up to 120°C) |
| Neoprene (CR) | -35°C | +120°C | Limited |
| Silicone | -60°C | +230°C | Yes |
| SBR | -30°C | +80°C | No |
| Natural Rubber | -50°C | +80°C | No |
How to Select the Right Rubber Gasket Material
| Medium Sealed | Recommended Grade |
|---|---|
| Petroleum oils, diesel, hydraulic fluid | NBR (Nitrile) |
| Water, steam, HVAC | EPDM |
| High temperature (+150°C+) | Silicone |
| Food and pharmaceutical contact | Silicone (FDA) or EPDM (WRAS) |
| Marine, refrigerants, weather | Neoprene (CR) |
| Low-cost general sealing | SBR or Natural |
Rubber Gasket Sheet Thicknesses Available in the UK
Standard gasket rubber sheet thicknesses stocked in the UK include:
- 1.5mm — thin gaskets, electrical enclosures, panel seals
- 3mm — most common general-purpose gasket thickness
- 4.5mm — medium-pressure flanges, pipework
- 6mm — heavy flanges, high-vibration applications
- 9mm, 12mm, 25mm — specialist heavy industry and marine
Most rubber gasket sheet is available in standard roll widths of 1.0m and 1.2m, with custom widths available to order. Cut-to-size service available for specific gasket profiles. Our rubber sheet and rubber sheeting rolls are stocked for immediate UK dispatch.
Rubber Gasket Sheet Standards & Certifications
- BS 1562 — Joint rings for use with asbestos-free jointing sheet (now refers to BS EN standards)
- WRAS approval — Required for EPDM used in contact with potable water (Water Regulations Advisory Scheme)
- FDA 21 CFR 177.2600 — Required for food-contact silicone and rubber
- BS EN 682 — Elastomeric seals for gas supply joints
- ISO 3302 — Rubber tolerances and dimensional limits
Cutting Rubber Gasket Sheet
Rubber gasket sheet can be cut using:
- Utility knife / Stanley knife — Suitable for SBR, EPDM, neoprene up to 6mm
- Die cutting / punch press — Precise repeatable gaskets in production volumes
- Waterjet cutting — Complex profiles in any thickness without heat distortion
- Laser cutting — Fine-detail silicone and neoprene gaskets
For DIY cutting, see our full rubber cutting guide for blade selection, technique, and safety tips.
Pressure Ratings: What Can Rubber Gaskets Seal?
| Application | Typical Pressure | Recommended Grade | Min. Thickness |
|---|---|---|---|
| Domestic plumbing | Up to 10 bar | EPDM or SBR | 3mm |
| Industrial pipework | 10–40 bar | NBR or EPDM | 4.5–6mm |
| Hydraulic systems | Up to 350 bar | NBR (specialist grade) | O-ring preferred |
| Low-pressure seals | Up to 5 bar | Any compatible grade | 1.5–3mm |
Frequently Asked Questions
What is the best rubber for gaskets?
There is no single best rubber — the correct choice depends on the medium sealed. For oil and fuel, use NBR nitrile. For water and steam, use EPDM. For high temperature, use silicone. For food contact, use FDA-approved silicone or WRAS-approved EPDM. Neoprene works well for general-purpose and marine applications.
Can I cut rubber sheet into gaskets myself?
Yes — rubber gasket sheet is easy to cut with a sharp utility knife or scissors for simple shapes. Use a metal ruler or straight edge and a cutting board. For precise or complex profiles, we can supply sheet pre-cut to size or in standard gasket dimensions.
How thick should a rubber gasket be?
3mm is the most common gasket thickness for general industrial flanges. Thinner 1.5mm suits panel and enclosure seals. Heavier 6mm+ suits high-pressure pipe flanges and vibration-isolating joints. Always check the flange recess depth if fitting into a groove.
Is NBR or EPDM better for water systems?
EPDM is better for water and steam systems. NBR is not resistant to hot water over 70°C and degrades in prolonged water contact. EPDM is the correct choice for plumbing, heating systems, and potable water applications. For potable (drinking) water, specify WRAS-approved EPDM.
Where can I buy rubber gasket sheet in the UK?
Rubberco stocks rubber gasket sheet in NBR, EPDM, neoprene, silicone and SBR grades, available cut to size with free UK delivery. Rolls and part rolls stocked for immediate despatch from our UK warehouse.
What is the difference between SBR and NBR rubber sheet?
SBR (styrene-butadiene rubber) is a general-purpose compound suitable for water, weak acids, and non-oil environments. NBR (nitrile) is an oil-resistant compound specifically formulated for contact with petroleum, hydraulic oils, and fuels. SBR is significantly cheaper; NBR is essential where oil contact is present. Never substitute SBR for NBR in oil-contact applications — it will swell and fail.
Does silicone rubber sheet work for outdoor gaskets?
Silicone rubber has excellent UV and ozone resistance and works well outdoors. However, for pure outdoor weathering applications without extreme temperatures, EPDM is typically more cost-effective and provides comparable performance. Silicone is the premium choice where both high temperature and outdoor exposure are combined.
Can rubber gaskets be used in gas supply systems?
Rubber gaskets for gas supply joints in the UK must conform to BS EN 682. Not all rubber compounds are approved — neoprene is the most commonly specified grade for natural gas and LPG. Always confirm the gasket material meets the relevant British Standard and is rated for the gas being sealed before installation.
Shop Rubber Sheet at Rubberco
Find the right rubber sheet grade for your gasket application:
- Rubber Sheet UK — SBR, EPDM, Nitrile, Neoprene and Silicone in stock
- Rubber Sheeting Rolls — Full 10m rolls for production volume gasket cutting
- Industrial Rubber Products — Heavy-duty materials for engineering and manufacturing
Need a specific grade or thickness not listed? Contact our technical team — we can source specialist gasket compounds to your specification.
