PartsTable
Technical Data Sheet
BF, #31, 0055 BLACK ✓ 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 BF, #31, 0055 BLACK is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-028-1177, 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
BF, #31, 0055 BLACK
NSN: 5340-01-028-1177
FSC: 5340
CAGE: 61821 — MARIAN RUBBER PRODUCTS CO INC (USA)
SPECIFICATIONS
Part NumberBF, #31, 0055 BLACK
NSN5340-01-028-1177
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BF, #31, 0055 BLACK 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
STYLE DESIGNATOR: CYLINDRICAL
OUTSIDE DIAMETER: 0.938 INCHES NOMINAL IN
MATERIAL: PLASTIC OVERALL
GRIPPING SURFACE CONDITION: GRIP AID
INSIDE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCYLINDRICAL
OUTSIDE DIAMETER0.938 INCHES NOMINAL IN
MATERIALPLASTIC OVERALL
OVERALL LENGTH3.375 INCHES NOMINAL IN
GRIPPING SURFACE CONDITIONGRIP AID
INSIDE DIAMETER0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
F804-1-2Upgraded Successor
successor cross-reference
successor
1017-000S-1Upgraded Successor
successor cross-reference
successor
3156Upgraded Successor
successor cross-reference
successor
7210-00-119-7356Interchangeable
interchangeable cross-reference
interchangeable
190170MSInterchangeable
interchangeable cross-reference
interchangeable
12083FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BF, #31, 0055 BLACK?
BF, #31, 0055 BLACK is a BF, #31, 0055 BLACK.
What parts can replace BF, #31, 0055 BLACK?
There are 12 known substitutes for BF, #31, 0055 BLACK: F804-1-2, 1017-000S-1, 3156 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BF, #31, 0055 BLACK?
BF, #31, 0055 BLACK is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-028-1177. This indicates validated use in U.S. government and defense supply chains.
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