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DuPont Kalrez 4079 O-Ring AS568-025
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Product Description
DuPont KLZ-4079 Kalrez 4079 perfluoroelastomer (FFKM) O-ring. Hot-hydrocarbon + amine service, 316°C max. Refining, petrochem reactor seals.
Technical Specifications
- Material
- FFKM perfluoroelastomer, black
- Compound
- Kalrez 4079
- Hardness
- 75±5 Shore A
- Max Temp
- 327°C (327°C continuous)
- Min Temp
- -6°C
- Size
- AS568-025 (metric + AS568B inch sizes available)
- Base
- Perfluoroelastomer (FFKM)
Standards & Compliance
- Material
- FFKM (Perfluoroelastomer)
- Temperature Range
- -6°C to +327°C
- Classification / Approval
- FDA 21 CFR 177.2600 / USP Class VI (1050LF grade)
- HS Code
- 4016.93
Compatibility & Fitment
Drop-in replacement for generic FFKM seals in aggressive chemical process service. AS568B Uniform Numbering System size interchangeable with all major O-ring manufacturers.
Product Documentation
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Catalogue entry last verified: 2026-08-13. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy KLZ-4079?
- KLZ-4079 can be ordered from cballast.com as a DuPont catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this DuPont product?
- The manufacturer part number is KLZ-4079.
- What is the HS code for KLZ-4079?
- The customs tariff (HS) code for KLZ-4079 is 4016.93.
- Who manufactures KLZ-4079?
- KLZ-4079 is a DuPont product in the Seals & Gaskets range.
- Is a datasheet available for KLZ-4079?
- Yes — the KLZ-4079 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for KLZ-4079?
- The minimum order quantity is 1.
- Is KLZ-4079 available?
- Yes — KLZ-4079 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).