Canrez CRZ-660 FFKM O-Ring UK Suppliers

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Reviewed by MLC Editorial Team | 26 July 2026

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Canrez CRZ-660 is a 75 Shore A perfluoroelastomer (FFKM) manufactured by Canyon Components. It seals continuously to 325°C and is specified for chemical and similar service. US-made FFKM positioned as direct Kalrez 4079 / Chemraz 615 alternative.

Specifications

Property	Value
Compound	CRZ-660
Manufacturer	Canyon Components
Maximum continuous temperature	325°C
Minimum temperature	0°C
Hardness	75 Shore A
Colour	Black
Material family	US-made FFKM positioned as direct Kalrez 4079 / Chemraz 615 alternative

Where Canrez CRZ-660 is used

Canrez CRZ-660 is specified for: Chemical, refinery, pharmaceutical.

Canrez CRZ-660 equivalents from other FFKM manufacturers

If Canrez CRZ-660 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 4079	DuPont (Chemours)	316°C	75 Shore A	✓
Chemraz 615	Greene Tweed	324°C	75 Shore A	✓
Simriz SZ487	Freudenberg-NOK	300°C	75 Shore A	✓

Available O-ring sizes

Canrez CRZ-660 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

Canrez CRZ-660 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 Canrez CRZ-660 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

Canyon Components - Manufacturer
ISO 3601 O-ring sizes
BS 1806

Frequently Asked Questions

What is Canrez CRZ-660 used for?

Canrez CRZ-660 is a 75 Shore A FFKM (perfluoroelastomer) compound from Canyon Components. It is used in Chemical, refinery, pharmaceutical. Continuous service temperature: 0°C to 325°C.

What is the temperature rating of Canrez CRZ-660?

Canrez CRZ-660 has a continuous service temperature range of 0°C to 325°C. Short-term excursions above the maximum are possible but degrade service life.

What is the equivalent of Canrez CRZ-660?

Direct equivalents to Canrez CRZ-660 include: Kalrez 4079, Chemraz 615, Simriz SZ487. Always confirm chemical compatibility against your specific fluid before substitution.

How much does Canrez CRZ-660 cost?

FFKM O-rings such as Canrez CRZ-660 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 Canrez CRZ-660 in the UK?

Canrez CRZ-660 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.

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

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Get a UK price for Canrez CRZ-660 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. OEM and production-run enquiries welcome, from a single seal to scheduled supply of thousands of parts.

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