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VARSHA INDUSTRIES

Engineering tool

Rubber Material Selector

Nearly every component sent back to us for failure analysis turns out to be the right shape in the wrong compound. Four inputs, and this tells you which of the eight elastomers we mould will survive — and which will not.

Your operating conditions

What does the part touch?

What is it doing?

100 °C
-10 °C
1

Nitrile (NBR)

Best match-30 to 110 °CEconomical
  • Excellent against mineral oil, fuel or grease
  • Well suited to static seal or gasket
  • Rated to 110 °C — covers your 100 °C maximum
2

Viton (FKM)

-20 to 230 °CPremium
  • Excellent against mineral oil, fuel or grease
  • Well suited to static seal or gasket
  • Rated to 230 °C — covers your 100 °C maximum
3

PTFE / Teflon

-100 to 260 °CPremium
  • Excellent against mineral oil, fuel or grease
  • Well suited to static seal or gasket
  • Rated to 260 °C — covers your 100 °C maximum
4

Neoprene (CR)

-35 to 120 °CEconomical
  • Acceptable against mineral oil, fuel or grease
  • Well suited to static seal or gasket
  • Rated to 120 °C — covers your 100 °C maximum
5

Polyurethane

Not recommended-30 to 80 °CMid
  • Excellent against mineral oil, fuel or grease
  • Workable for static seal or gasket
  • Limited to 80 °C — your 100 °C maximum is too hot
6

EPDM

Not recommended-45 to 140 °CEconomical
  • Attacked by mineral oil, fuel or grease
  • Well suited to static seal or gasket
  • Rated to 140 °C — covers your 100 °C maximum
7

Silicone (VMQ)

Not recommended-60 to 230 °CMid
  • Attacked by mineral oil, fuel or grease
  • Well suited to static seal or gasket
  • Rated to 230 °C — covers your 100 °C maximum
8

Natural Rubber

Not recommended-50 to 80 °CEconomical
  • Attacked by mineral oil, fuel or grease
  • Workable for static seal or gasket
  • Limited to 80 °C — your 100 °C maximum is too hot

A caution. This ranks general-purpose grades against four variables. Real applications add pressure, dynamic frequency, surface finish, gland design and regulatory requirements. Use it to narrow the field, then let us confirm the compound before you commit to tooling.

Send a drawing, a sample, or just a photo of the worn part.

We will identify the compound, quote the tooling and get a first sample to you. No drawing needed — a measured sketch or the old component is enough to start.