PartsTable
Technical Data Sheet
Download PDF

CAFB4639B — RETAINER,SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CAFB4639B: RETAINER,SEAL.

The RETAINER,SEAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-388-7452, 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
CAFB4639B
NSN: 5330-00-388-7452
FSC: 5330 — Packing and Gasket Materials
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
Part NumberCAFB4639B
NSN5330-00-388-7452
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CAFB4639B 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
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 10
16AFA5CPC20Reference document
Same NSN cross-reference
Reference document — Secondary reference
10AF10C5BPC20Reference document
Same NSN cross-reference
Reference document — Secondary reference
15AF9B5APC20Reference document
Same NSN cross-reference
Reference document — Secondary reference
7AF9B5BPC20Reference document
Same NSN cross-reference
Reference document — Secondary reference
MAFB5APC13Reference document
Same NSN cross-reference
Reference document — Secondary reference
9AF9B5APC20Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy CAFB4639B?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is CAFB4639B?
CAFB4639B is a RETAINER,SEAL.
What parts can replace CAFB4639B?
There are 10 known substitutes for CAFB4639B: 16AFA5CPC20, 10AF10C5BPC20, 15AF9B5APC20 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CAFB4639B?
CAFB4639B is cataloged in the U.S. Government catalog under NSN 5330-00-388-7452. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — CAFB4639B

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.