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4K1-83 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4K1-83: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 0.350 INCHES NOMINAL IN, cross-sectional_height: 0.061 INCHES NOMINAL IN, end_item_identification: 1-1/4 IN FLANGE WATER REGULATING 2-WAY VALVE DIRECT ACTING; MODEL NO, M900P-125FL-2W W, part_name_assigned_by_controlling_agency: SEAL, STEM. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-528-5613, 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
4K1-83
NSN: 5331-01-528-5613
FSC: 5331 — O-ring
CAGE: 21013 — METREX VALVE CORP. DBA METREX VALVE CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter0.350 INCHES NOMINAL IN
cross-sectional_height0.061 INCHES NOMINAL IN
end_item_identification1-1/4 IN FLANGE WATER REGULATING 2-WAY VALVE DIRECT ACTING; MODEL NO, M900P-125FL-2W W
part_name_assigned_by_controlling_agencySEAL, STEM
NSN5331-01-528-5613
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4K1-83 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: 0.061 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.350 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.061 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.350 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAL, STEM
END ITEM IDENTIFICATION1-1/4 IN FLANGE WATER REGULATING 2-WAY VALVE DIRECT ACTING; MODEL NO, M900P-125FL-2W W
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 IT 31Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4K1-83?
4K1-83 is a O-RING.
What parts can replace 4K1-83?
There is 1 known substitute for 4K1-83: M900P-1215FL-2W IT 31. Substitute compatibility should be verified for your specific system.
What is the NSN for 4K1-83?
4K1-83 is cataloged in the U.S. Government catalog under NSN 5331-01-528-5613. This indicates validated use in U.S. government and defense supply chains.
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