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Technical Data Sheet
PartsTable / COMPONENT / CWK643-7PC12
CWK643-7PC12 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: COTTON AND RUBBER OVERALL, peripheral_diameter: 2.500 INCHES NOMINAL IN, center_hole_diameter: 1.250 INCHES NOMINAL IN, cross-sectional_height: 0.500 INCHES NOMINAL IN, cross-sectional_thickness: 0.120 INCHES NOMINAL IN, cross-sectional_shape_style: CUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-867-3525, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
CWK643-7PC12
NSN: 5330-00-867-3525
FSC: 5330
CAGE: 87045 — WALZ & KRENZER INC DIV MAPECO PRODUCTS (USA)
SPECIFICATIONS
materialCOTTON AND RUBBER OVERALL
peripheral_diameter2.500 INCHES NOMINAL IN
center_hole_diameter1.250 INCHES NOMINAL IN
cross-sectional_height0.500 INCHES NOMINAL IN
cross-sectional_thickness0.120 INCHES NOMINAL IN
cross-sectional_shape_styleCUP
NSN5330-00-867-3525
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CWK643-7PC12 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: COTTON AND RUBBER OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: CUP
•
CROSS-SECTIONAL THICKNESS: 0.120 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 2.500 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOTTON AND RUBBER OVERALL
CROSS-SECTIONAL HEIGHT0.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLECUP
CROSS-SECTIONAL THICKNESS0.120 INCHES NOMINAL IN
PERIPHERAL DIAMETER2.500 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
BAC21X5Interchangeable
interchangeable cross-reference
interchangeable
0022-100Interchangeable
interchangeable cross-reference
interchangeable
CVC1462-5Interchangeable
interchangeable cross-reference
interchangeable
SL4732PC54Interchangeable
interchangeable cross-reference
interchangeable
HL-40025Interchangeable
interchangeable cross-reference
interchangeable
SL4639PC54Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CWK643-7PC12?
CWK643-7PC12 is a PACKING,PREFORMED.
What parts can replace CWK643-7PC12?
There are 17 known substitutes for CWK643-7PC12: BAC21X5, 0022-100, CVC1462-5 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CWK643-7PC12?
CWK643-7PC12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-867-3525. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026