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GuideDiode Trading EST · 5 min read
31 October, 2026 | 
AdminShort answer: NBR for oils and fuels, EPDM for water, steam and weather, Viton (FKM) for hot fuels and aggressive chemicals, silicone for wide temperature and clean applications. Diode Trading EST works as a nbr epdm viton silicone gasket supplier and stocks the sheets and cut gaskets in Dammam.
Rubber gaskets seal well at low bolt load and are the most economical choice for many flanges, covers, pumps and pipe joints. The key is the polymer: the wrong rubber swells, hardens or cracks quickly.
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NBR resists mineral oils, greases, fuels and hydraulic fluids, and wears well. It is the default for oil-based service and typically runs from around minus 30 °C to about 100 °C. It is not suited to ozone, weather, strong acids, ketones or brake fluid.
EPDM is excellent in water, hot water, low-pressure steam, air, alkalis and weather. Searches for an epdm gasket saudi arabia usually relate to water, HVAC, utilities and outdoor equipment. It should not be used with mineral oils, fuels or greases, which make it swell rapidly.
Viton is a fluorocarbon rubber that tolerates high temperature, fuels, oils, many acids and solvents. A viton gasket supplier saudi arabia supplies it for demanding oil and gas, chemical and automotive duty. It costs more than NBR or EPDM, and standard grades are not suitable for hot water, steam, amines or ketones.
Silicone works over a very wide temperature range, stays flexible in cold and heat, resists ozone and weather, and is available in food-grade types. Its tear strength is low, and it is not suitable for steam, strong acids, or oils at high temperature. Use it for ovens, covers, enclosures and hygienic equipment.
| Rubber | Good for | Avoid with |
|---|---|---|
| NBR | Oils, fuels, hydraulic fluid | Ozone, ketones, strong acids |
| EPDM | Water, steam, alkalis, weather | Mineral oils and fuels |
| Viton (FKM) | Hot oils, fuels, many chemicals | Steam, amines, ketones |
| Silicone | Wide temperature, food grade | Steam, oils, high abrasion |
Temperature and chemical limits vary by compound, so always check the specific grade.
When the fluid is too aggressive for any rubber, PTFE gaskets are the next step. People who search for a rubber and ptfe gasket manufacturer often need both: rubber for utilities and PTFE for chemical lines. We supply both materials as cut gaskets from stocked sheet, in standard flange sizes or to drawing.
Store rubber sheet flat or rolled loosely, away from sunlight, ozone sources and heat, and use older stock first.
Rubber gasket sheet is described by hardness in Shore A. Softer grades (around 50 to 60) conform to rough flanges and need less bolt load. Harder grades (70 and above) resist extrusion better at higher pressure. Thickness choice is a balance: thicker sheet is more forgiving on uneven surfaces, but thin gaskets handle pressure better. Rubber can also be supplied with fabric or wire insertion for extra strength, which is useful for large gaskets and higher pressures.
Rubber gaskets can be cut as full-face, ring, or custom shape. Full-face gaskets are common on plastic and light-duty flanges, while ring types are used on raised-face steel flanges.
Colour is not a reliable guide to rubber type. Black rubber may be NBR, EPDM or Viton, and red or other colours may be used for identification or for silicone. Always confirm compound by label or data sheet rather than by appearance.
Compression set, the tendency of rubber to stay flattened after long compression, is another reason to choose carefully. A compound with poor compression set loses sealing force over time, particularly at high temperature. For long-lasting seals in hot service, Viton or good-quality EPDM usually outperform cheaper general-purpose rubber.
If you maintain a mixed fleet of equipment, keep a simple chart on the workshop wall listing each rubber type, what it resists and what it should never touch. It prevents the common mistake of fitting an NBR gasket in a glycol coolant circuit or an EPDM gasket on a fuel line.
EPDM and NBR are both used; confirm with the temperature and any chemicals present.
No. Mineral oils make EPDM swell and fail.
Yes when temperature or chemicals exceed NBR limits.
Yes. Provide a drawing, sample or dimensions.
Tell us the material, thickness or size, quantity and application for your rubber or PTFE gasket order. Everything we list is in stock and ships from our Dammam warehouse, with export across the GCC. Send your list through our request a quote page, message us on WhatsApp at +966 56 838 3649, or email sales@diode.sa.
Buyers searching for a rubber gasket manufacturer saudi arabia will find that Diode supplies from stock as a trader. We are a rubber gaskets supplier saudi arabia customers can order from in Al Khobar and Dammam.
We are an nbr gasket supplier ksa buyers contact, and we can quote silicone gaskets saudi arabia projects need. EPDM and Viton are covered in the guide above.
Teams ask us for ptfe and rubber gaskets for pipelines, and for custom-cut ptfe & rubber gaskets saudi arabia wide. Send drawings or dimensions and we confirm what is possible.
For custom rubber fabrication saudi arabia buyers often need, tell us the material, thickness and quantity on WhatsApp +966 56 838 3649, and we will advise how we can help.
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Read moreDiode Trading EST supplies these Rubber Sheets, Gaskets & Seals from stock in Dammam, with delivery across Saudi Arabia and the GCC.
Stock in Dammam · MTC with every order
Need a price or lead time? Talk to our sales team.