What is FPM gasket material?
FPM is the ISO designation, FKM is the ASTM designation. All of the designations stand for one single base material, which is fluoro rubber. This rubber is used in applications that need O-rings that are resistant to high temperatures and chemical attacks.
What is Buna-N Seal?
What is Buna-N? Nitrile (also known as NBR rubber and Buna-N) is the seal industry’s most widely used and economical elastomer. This is partly because it displays excellent resistance to petroleum-based oils, fuels, water, alcohols, silicone greases, hydraulic fluids.
Is Buna-N the same as Viton?
Viton is the choice over Buna for high-temperature applications. Viton seals hold indefinitely at temperatures up to 400°F and can last up to 48 hours at temperatures up to 600°F. Buna is effective to 250°F. Viton offers universal chemical resistance for sealing applications for oils, fuels, and mineral acids.
Which is better Viton or NBR?
General Suitability: Viton® is best suited for diverse sealing jobs that require high temperature and chemical resistance. This makes Viton® far superior to Nitrile in these regards. They are also designed to resist most oils and lubricants, more importantly petroleum-based lubricants.
What is FPM seal?
This sealing ring is Green and made from fluorine rubber (Viton®). This is BLÜCHER’s sealing ring for special applications. The material is particularly heat-resistant and resistant to oil, solvents and strong acids.
What does FPM rubber mean?
fluoro rubber
The terms FPM, FKM and Viton® very often cause confusion and lead to incorrect interpretations. All of these designations actually stand for one single base material:fluoro rubber. Zrunek uses the designation FPM for all of its fluoro-elastomer materials.
What is Buna-N material?
Nitrile rubber — also known as acrylonitrile butadiene rubber, NBR, or Buna-N — is a synthetically produced, petroleum-based rubber ideal for seals, gaskets and o-rings. Nitrile is a highly versatile rubber. It is used in countless applications and products, from marine fuel systems to small engine carburetors.
What is the difference between Buna and Buna-N?
Buna-N is used for making oil seals, manufacturing of tank linings, protective gloves etc. Buna-S is used for making automobile tyres, rubber soles, belts, hoses etc.
Is Buna-N trademark?
Buna N® is the registered trademark of Pittway Corporation, Chicago for nitrile rubber or NBR, which is produced by the polymerization of two monomer units: acrylonitrile and butadiene.
Is Buna-N compatibility chart?
Choose compound from list to view O-Ring compatability rating….O-Ring Compatibility Chart.
| Compound | Acetic Acid, 30% |
|---|---|
| Nitrile (Buna-N) | B |
| Ethylene-Propylene (EP) | A |
| Fluoro- elastomer (Viton) | B |
| PTFE | A |
What is the difference between FKM and FPM?
So what’s the difference between FPM and FKM? FPM is the international designation to ISO – whereas FKM is the ASTM abbreviation. Both of these designations stand for the same base material : Fluoro Rubber.
Is FPM and Viton the same?
FKM / FPM / Viton® The terms FKM, FPM and Viton® are all different designations that stand for the same base material, which is fluoro rubber.
What are the properties of EPDM and NBR rubber seals?
Rubber Types International designation EPDM NBR FPM Rubber type Ethylene propene Nitrile Fluorine (Viton) Nominal hardness IRHD 60 (+/-5) 60 (+/-5) 60 (+/-5) Color Black Black/yellow dot Green Tensile strength MPa ≥ 10 N/mm² ≥ 10 N/mm² ≥ 8 N/mm²
What kind of chemical compatibility does Buna-N ASTM D1418 have?
It has good compression set along with good termperature and chemical compatibility. Buna-N ASTM D1418 XNBR Temperature range:-40 to 120 °C Durometer:70 Resistance to compression set:2 Color:Black or Brown Also know as nitrile rubber and is a synthetic blend of acrylonitrile and butadiene.
What kind of rubber is a FPM seal made of?
FPM. This sealing ring is Green and made from fluorine rubber (Viton®). This is BLÜCHER’s sealing ring for special applications. The material is particularly heat-resistant and resistant to oil, solvents and strong acids. However, the FPM seal has only limited resistance to e.g. butyl acetate, acetone and methyl alcohol.
Can a static seal be made out of NBR?
Low-temperature applications (such as street cars) may be able to use NBR for static seals. If you are running pure gasoline or petroleum diesel in a non-return fuel system, NBR seals will be perfectly acceptable.