Perlast G90A FFKM O-Ring UK Suppliers

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Perlast G90A FFKM O-Ring UK Suppliers

Reviewed by MLC Editorial Team | 26 July 2026

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Perlast G90A is a 90 Shore A perfluoroelastomer (FFKM) manufactured by Precision Polymer Engineering. It seals continuously to 270°C and is specified for oil and gas valves and similar service. Hard FFKM for high-pressure.

Specifications

Property	Value
Compound	G90A
Manufacturer	Precision Polymer Engineering
Maximum continuous temperature	270°C
Minimum temperature	0°C
Hardness	90 Shore A
Colour	Black
Material family	Hard FFKM for high-pressure

Where Perlast G90A is used

Perlast G90A is specified for: Oil and gas valves, RGD service.

Perlast G90A equivalents from other FFKM manufacturers

If Perlast G90A isn't available, these compounds from competing manufacturers have similar chemistry and operating windows. Always verify against your actual fluid and temperature before substitution.

Equivalent compound	Manufacturer	Max temp	Hardness	Direct match
Kalrez 8475	DuPont (Chemours)	325°C	90 Shore A	approx
Chemraz 633	Greene Tweed	327°C	90 Shore A	approx

Available O-ring sizes

Perlast G90A is supplied in:

BS 1806 sizes: BS001 to BS932 (UK / EU standard, imperial-origin metric)
AS568 sizes: -001 to -932 (US standard, dimensionally identical to BS 1806)
ISO 3601 sizes: metric IDs from 2 mm to 670 mm with cross-sections 1.0 mm to 7.0 mm
JIS B 2401: P, G, S series (Japanese OEM equipment)
Custom / non-standard: built-to-print for OEM applications

For a list of sizes commonly stocked in the UK, see the BS 1806 size chart, ISO 3601 metric chart, or contact a UK seal specialist below.

UK availability

Perlast G90A is supplied in the UK by FFKM specialists carrying multiple manufacturer lines. Lead time is typically 2-5 working days for stock sizes, 4-8 weeks for custom-moulded sizes. Use the form below to get a quote from a UK FFKM specialist.

Get a quote for Perlast G90A FFKM O-Ring UK Suppliers

Acumen Seals & Pumps - UK specialist in mechanical seals, FFKM O-rings, Kalrez compounds, and elastomer parts. 36 years of inventory, UK stock with 24-48 hour despatch, and a price back within 4 working hours.

Send an enquiry via the MLC contact form

References

Precision Polymer Engineering - Manufacturer
ISO 3601 O-ring sizes
BS 1806

Frequently Asked Questions

What is Perlast G90A used for?

Perlast G90A is a 90 Shore A FFKM (perfluoroelastomer) compound from Precision Polymer Engineering. It is used in Oil and gas valves, RGD service. Continuous service temperature: 0°C to 270°C.

What is the temperature rating of Perlast G90A?

Perlast G90A has a continuous service temperature range of 0°C to 270°C. Short-term excursions above the maximum are possible but degrade service life.

What is the equivalent of Perlast G90A?

Direct equivalents to Perlast G90A include: Kalrez 8475, Chemraz 633. Always confirm chemical compatibility against your specific fluid before substitution.

How much does Perlast G90A cost?

FFKM O-rings such as Perlast G90A are typically £30 to £500 per piece depending on size, with custom or large-bore parts at the upper end. Get a current quote via the form on this page.

Where can I buy Perlast G90A in the UK?

Perlast G90A is supplied in the UK by independent FFKM seal specialists with multi-brand inventory. Lead time is 2-5 working days for stock BS/AS568 sizes, 4-8 weeks for custom-moulded sizes.

References

Precision Polymer Engineering — Manufacturer
ISO 3601 O-ring sizes
BS 1806

Independent UK engineering trade publication. Company profiles cross-referenced with Companies House.

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Get a UK price for Perlast G90A FFKM O-Ring UK Suppliers

Andrew Sykes at Acumen Seals & Pumps — 36 years in sealing. UK stock with 24–48 hour despatch, and a price back within 4 working hours.

Your enquiry goes straight to Acumen Seals & Pumps, a UK sealing specialist. No obligation, and we never pass your details to anyone else.