PartsTable
Technical Data Sheet
Download PDF

4K1-76 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4K1-76: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 1.989 INCHES NOMINAL IN, cross-sectional_height: 0.070 INCHES NOMINAL IN, end_item_identification: 1 1/4 INCH WATER PRESSURE RELIEF VALVE IN, part_name_assigned_by_controlling_agency: AS-568A 2-033 BUNA-N ORING A. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-570-3507, 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
4K1-76
NSN: 5331-01-570-3507
FSC: 5331 — O-ring
CAGE: 21013 — METREX VALVE CORP. DBA METREX VALVE CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter1.989 INCHES NOMINAL IN
cross-sectional_height0.070 INCHES NOMINAL IN
end_item_identification1 1/4 INCH WATER PRESSURE RELIEF VALVE IN
part_name_assigned_by_controlling_agencyAS-568A 2-033 BUNA-N ORING A
NSN5331-01-570-3507
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4K1-76 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: 0.070 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.989 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.070 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.989 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYAS-568A 2-033 BUNA-N ORING A
END ITEM IDENTIFICATION1 1/4 INCH WATER PRESSURE RELIEF VALVE IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
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 1
M900P-1215FL-2W PC12Reference 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 4K1-76?
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 4K1-76?
4K1-76 is a O-RING.
What parts can replace 4K1-76?
There is 1 known substitute for 4K1-76: M900P-1215FL-2W PC12. Substitute compatibility should be verified for your specific system.
What is the NSN for 4K1-76?
4K1-76 is cataloged in the U.S. Government catalog under NSN 5331-01-570-3507. 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 — 4K1-76