PartsTable
Technical Data Sheet
PartsTable / O-RING / KS1321SUB1
KS1321SUB1 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, cross-sectional_height: 0.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-171-5371, 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
KS1321SUB1
NSN: 5331-00-171-5371
FSC: 5331 — O-RING
CAGE: 49675 — RCA CORP GOVERNMENT AND COMMERCIAL SYSTEMS COMMERCIAL COMMICATIONS SYSTEMS DIV (USA)
SPECIFICATIONS
materialRUBBER
cross-sectional_height0.250 INCHES NOMINAL IN
NSN5331-00-171-5371
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: KS1321SUB1 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: RUBBER
•
CROSS-SECTIONAL HEIGHT: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
H556CInterchangeable
interchangeable cross-reference
interchangeable
11229Interchangeable
interchangeable cross-reference
interchangeable
126-4517Interchangeable
interchangeable cross-reference
interchangeable
65-04Interchangeable
interchangeable cross-reference
interchangeable
840-002-001Interchangeable
interchangeable cross-reference
interchangeable
M8-G1K-B4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy KS1321SUB1?
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 KS1321SUB1?
KS1321SUB1 is a O-RING.
What parts can replace KS1321SUB1?
There are 23 known substitutes for KS1321SUB1: H556C, 11229, 126-4517 and 20 more. Substitute compatibility should be verified for your specific system.
Is KS1321SUB1 still available?
KS1321SUB1 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — KS1321SUB1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026