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Technical Data Sheet
PartsTable / COMPONENT / 21-3 ITEM 13
21-3 ITEM 13 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-530-3641, 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
21-3 ITEM 13
NSN: 5330-01-530-3641
FSC: 5330
CAGE: 30263 — PIMA VALVE, LLC (USA)
SPECIFICATIONS
Part Number21-3 ITEM 13
NSN5330-01-530-3641
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21-3 ITEM 13 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
21313Interchangeable
interchangeable cross-reference
interchangeable
PB726Interchangeable
interchangeable cross-reference
interchangeable
5842Interchangeable
interchangeable cross-reference
interchangeable
A21313Interchangeable
interchangeable cross-reference
interchangeable
90-44568-6Interchangeable
interchangeable cross-reference
interchangeable
211003283Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-3 ITEM 13?
21-3 ITEM 13 is a RETAINER,PACKING.
What parts can replace 21-3 ITEM 13?
There are 7 known substitutes for 21-3 ITEM 13: 21313, PB726, 5842 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-3 ITEM 13?
21-3 ITEM 13 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-530-3641. 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