PartsTable
Technical Data Sheet
Download PDF

843-7770 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

843-7770: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, center_hole_diameter: 11.880 INCHES MINIMUM AND 12.000 INCHES MAXIMUM IN, cross-sectional_height: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-352-1160, 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
843-7770
NSN: 5331-01-352-1160
FSC: 5331 — O-ring
CAGE: 8L394 — GREAT LAKES RUBBER SUPPLIES INC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
center_hole_diameter11.880 INCHES MINIMUM AND 12.000 INCHES MAXIMUM IN
cross-sectional_height0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
NSN5331-01-352-1160
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 843-7770 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
•
CROSS-SECTIONAL HEIGHT: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 11.880 INCHES MINIMUM AND 12.000 INCHES MAXIMUM IN
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
CENTER HOLE DIAMETER11.880 INCHES MINIMUM AND 12.000 INCHES MAXIMUM IN
MATERIALRUBBER CHLOROPRENE CLASS CR
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 2
120-00365-000Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
13229E0117Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 843-7770?
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 843-7770?
843-7770 is a O-RING.
What parts can replace 843-7770?
There are 2 known substitutes for 843-7770: 120-00365-000, 13229E0117. Substitute compatibility should be verified for your specific system.
What is the NSN for 843-7770?
843-7770 is cataloged in the U.S. Government catalog under NSN 5331-01-352-1160. 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 — 843-7770

✓ 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.