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Technical Data Sheet
PartsTable / O-RING / A/B33-25
A/B33-25 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The A/B33-25 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-345-0052, 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
A/B33-25
NSN: 5331-01-345-0052
FSC: 5331 — O-RING
CAGE: 66208 — BAY STATE CONTROLS CORPORATION (USA)
SPECIFICATIONS
Part NumberA/B33-25
NSN5331-01-345-0052
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A/B33-25 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
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CROSS-SECTIONAL HEIGHT: 0.060 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT0.060 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
A25Interchangeable
Target,bull's-Eye
interchangeable
A25C-3Interchangeable
interchangeable cross-reference
interchangeable
K46196Interchangeable
interchangeable cross-reference
interchangeable
2K40F30HM25WInterchangeable
interchangeable cross-reference
interchangeable
E30057PC14Interchangeable
interchangeable cross-reference
interchangeable
B25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A/B33-25?
A/B33-25 is a A/B33-25.
What parts can replace A/B33-25?
There are 14 known substitutes for A/B33-25: A25, A25C-3, K46196 and 11 more. Substitute compatibility should be verified for your specific system.
Is A/B33-25 still available?
A/B33-25 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026