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725-70-326 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

725-70-326: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, outside_diameter: 1.995 INCHES MINIMUM AND 2.045 INCHES MAXIMUM IN, center_hole_diameter: 1.590 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN, cross-sectional_height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-265-1087, 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
725-70-326
NSN: 5331-00-265-1087
FSC: 5331 — O-ring
CAGE: 96879 — TROSTEL ALBERT PACKING LTD (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter1.995 INCHES MINIMUM AND 2.045 INCHES MAXIMUM IN
center_hole_diameter1.590 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN
cross-sectional_height0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
NSN5331-00-265-1087
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 725-70-326 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: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.995 INCHES MINIMUM AND 2.045 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.590 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.995 INCHES MINIMUM AND 2.045 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.590 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONW/S: AIRCRAFT, GALAXY C-5; SPRUANCE CLASS DD (963); SUPPORT EQUIPMENT, B-1 AIRCRAFT; SYSTEMS, JP-5 AVIATION FUELS; SUPPORT EQUIPMENT, MX PEACEKEEPER MISSILE; TICONDEROGA CLASS CG (47); HELICOPTER, MH-53E; AIRCRAFT, B-2 BOMBER (ATB); CVN 68 CLASS REACTOR FILL AUXILIARY SYSTEM; HELICOPTER, HH-53H PAVE LOW
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 9
5331PL2228208Reference document
Same NSN cross-reference
Reference document — Informative reference only
PRP568-130-457-6-0Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS29513-326Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS29513-326ESReference document
Same NSN cross-reference
Reference document — Secondary reference
GS570EM326Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10093D-PIECE 20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 725-70-326?
725-70-326 is a O-RING.
What parts can replace 725-70-326?
There are 9 known substitutes for 725-70-326: 5331PL2228208, PRP568-130-457-6-0, MS29513-326 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 725-70-326?
725-70-326 is cataloged in the U.S. Government catalog under NSN 5331-00-265-1087. 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.