Kalrez 6375 O-rings are FFKM seals for extreme conditions. They resist chemicals, heat (-40°C to +280°C), and steam. Used in semiconductors, chemicals, and vacuum systems.
Operating Limited:
| Material |
NBR, EPDM |
| Hardness |
65~75 |
| Temperature |
-40~280℃ |
| Color |
Black or colors |
Material introduction:
Nitrile rubber (NBR, Buna-N) provides excellent resistance to petroleum oils as well as mineral and vegetable oil. Nitrile rubber also offers strong resistance to heat aging - often a key advantage over natural rubber.
Nitrile rubber performs well in carburetor and fuel pump diaphragms, aircraft hoses, seals and gaskets as well as oil-lined tubing. Due to its versatility, nitrile is used in applications involving not only oil and fuel resistance, but those applications requiring resistance to heat, abrasion, water, and gas permeability.
EPDM rubber is a high density rubber primarily used for outdoor applications. It has dynamic and mechanical properties between natural rubber and synthetic rubber.
Do not use EPDM if continual contact with petroleum based products is required.
Not recommended for usage in food applications or those that are exposed to aromatic hydrocarbons.
Application:
1. Semi-conductor process tools and fixture
2. Mechanical seals
3. High strength kiln furniture
4. Various wear parts
5. Various corrosion resistant parts
6. Oxidation resistant crucibles
7. Protection and safety
8. Water pump seals
Shipping & Payment Terms:
Port of Loading: Shanghai
Shipping Method: DHL,UPS,FEDEX,TNT, etc
Payment Terms: T/T, Western Union, money gram
Our services:
◆ OEM/ODM orders are available for our factory
◆ Accept customized mechanical seals according to your drawing or requirements
◆ Small quantity is accepted
◆ Provides excellent quality with competitive price
Q: What makes Kalrez 6375 O-rings special?
A: Made from premium FFKM material for extreme chemical/thermal resistance.
Q: What temperature range can it handle?
A: Performs reliably from -40°C to +280°C continuous service.
Q: What chemicals does it resist?
A: Withstands acids, bases, solvents, steam, and aggressive plasmas.
Q: How durable is it?
A: 3-5x longer lifespan than standard FKM in harsh conditions.
Q: What industry standards does it meet?
A: Complies with FDA, USP Class VI, RoHS, and AS568 sizing standards.
Q: What color options are available?
A: Standard black for general use, white for cleanroom applications.
Q: What sizes are available?
A: All standard AS568 sizes plus custom diameters/cross-sections.
Q: How does it compare to regular rubber O-rings?
A: Superior performance in extreme environments, though at higher cost.
Q: Where is it commonly used?
A: Critical applications in semiconductor, chemical processing, and pharmaceutical industries.
Q: Is it worth the higher price?
A: Yes - reduces downtime and replacement costs in demanding applications.
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