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ST1050-153 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ST1050-153: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.663 INCHES MINIMUM AND 3.723 INCHES MAXIMUM IN, center_hole_diameter: 3.463 INCHES MINIMUM AND 3.511 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-167-5139, 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
ST1050-153
NSN: 5331-00-167-5139
FSC: 5331 — O-ring
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter3.663 INCHES MINIMUM AND 3.723 INCHES MAXIMUM IN
center_hole_diameter3.463 INCHES MINIMUM AND 3.511 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
NSN5331-00-167-5139
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST1050-153 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: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 3.663 INCHES MINIMUM AND 3.723 INCHES MAXIMUM IN
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 3.463 INCHES MINIMUM AND 3.511 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
OUTSIDE DIAMETER3.663 INCHES MINIMUM AND 3.723 INCHES MAXIMUM IN
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER3.463 INCHES MINIMUM AND 3.511 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
SUBSTITUTES & CROSS-REFERENCES 8
5331PL1674508Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS3209-153Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS9388-153Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LE121T SHT5, 820300-7 FN-10Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
DD-4618 REF NO 16Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2-153Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST1050-153?
ST1050-153 is a O-RING.
What parts can replace ST1050-153?
There are 8 known substitutes for ST1050-153: 5331PL1674508, AS3209-153, MS9388-153 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST1050-153?
ST1050-153 is cataloged in the U.S. Government catalog under NSN 5331-00-167-5139. 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.