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0561C0031-29 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

0561C0031-29: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q, temp_rating: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 2.605 INCHES MINIMUM AND 2.657 INCHES MAXIMUM IN, center_hole_diameter: 2.415 INCHES MINIMUM AND 2.435 INCHES MAXIMUM IN, elongation_percentage: 331 MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-556-7877, 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
0561C0031-29
NSN: 5331-00-556-7877
FSC: 5331 — O-ring
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
temp_rating-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter2.605 INCHES MINIMUM AND 2.657 INCHES MAXIMUM IN
center_hole_diameter2.415 INCHES MINIMUM AND 2.435 INCHES MAXIMUM IN
elongation_percentage331 MAXIMUM
cross-sectional_height0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
NSN5331-00-556-7877
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0561C0031-29 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
•
TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.605 INCHES MINIMUM AND 2.657 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 331 MAXIMUM
•
CENTER HOLE DIAMETER: 2.415 INCHES MINIMUM AND 2.435 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SILICONE CLASS Q
TECHNICAL CHARACTERISTICS
TEMP RATING-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.605 INCHES MINIMUM AND 2.657 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE331 MAXIMUM
CENTER HOLE DIAMETER2.415 INCHES MINIMUM AND 2.435 INCHES MAXIMUM IN
MATERIALRUBBER SILICONE CLASS Q
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 6
AS568-143/D2000-05Reference document
Same NSN cross-reference
Reference document — Secondary reference
2-143N674-70Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AS568Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
3510-0034-001Reference document
Same NSN cross-reference
Reference document — Secondary reference
N32-95-256Reference document
Same NSN cross-reference
Reference document — Secondary reference
D2000Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 0561C0031-29?
0561C0031-29 is a O-RING.
What parts can replace 0561C0031-29?
There are 6 known substitutes for 0561C0031-29: AS568-143/D2000-05, 2-143N674-70, AS568 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0561C0031-29?
0561C0031-29 is cataloged in the U.S. Government catalog under NSN 5331-00-556-7877. 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.