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Technical Data Sheet
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312761-1 — STANDOFF

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

312761-1: STANDOFF.

The STANDOFF is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: CORROOSION RESISTANT STEEL; 3.238 IN. LG IN.

This part is cataloged in the U.S. Government catalog under NSN 5330-00-462-4116, 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
312761-1
NSN: 5330-00-462-4116
NIINs: 004624116, 011240350
FSC: 5330 — Packing and Gasket Materials
CAGE: F1600 — FENWICK-LINDE (FRA)
SPECIFICATIONS
general_characteristics_item_descriptionCORROOSION RESISTANT STEEL; 3.238 IN. LG IN
NSN5330-00-462-4116
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 312761-1 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
•
SEAL WIDTH: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 2.870 INCHES MINIMUM AND 2.875 INCHES MAXIMUM IN
•
CASE STYLE: RECESSED
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ACCOMMODATED SHAFT DIAMETER: 1.872 INCHES MINIMUM AND 1.876 INCHES MAXIMUM IN
•
MATERIAL: STEEL CASE
•
ATTACHMENT METHOD: CEMENTED
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER2.870 INCHES MINIMUM AND 2.875 INCHES MAXIMUM IN
CASE STYLERECESSED
ACCOMMODATED SHAFT DIAMETER1.872 INCHES MINIMUM AND 1.876 INCHES MAXIMUM IN
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
ATTACHMENT METHODCEMENTED
SUBSTITUTES & CROSS-REFERENCES 1
ENG8632EReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 312761-1?
312761-1 is a STANDOFF.
What parts can replace 312761-1?
There is 1 known substitute for 312761-1: ENG8632E. Substitute compatibility should be verified for your specific system.
What is the NSN for 312761-1?
312761-1 is cataloged in the U.S. Government catalog under NSN 5330-00-462-4116. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.