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65BC31 ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SHOULDERED, seal_width: 0.563 INCHES NOMINAL IN, special_features: THREE LOCKING TABS LOCATED ON THE OD,120 DEG APART, housing_bore_diameter: 1.375 INCHES NOMINAL IN, sealing_element_style: VERTICAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-532-3818, 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
65BC31
NSN: 5330-00-532-3818
FSC: 5330
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSHOULDERED
seal_width0.563 INCHES NOMINAL IN
special_featuresTHREE LOCKING TABS LOCATED ON THE OD,120 DEG APART
housing_bore_diameter1.375 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter0.688 INCHES NOMINAL IN
NSN5330-00-532-3818
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 65BC31 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: WOOL SEALING ELEMENT
•
SEAL WIDTH: 0.563 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 1.375 INCHES NOMINAL IN
•
CASE STYLE: SHOULDERED
•
SEALING ELEMENT STYLE: VERTICAL
•
ACCOMMODATED SHAFT DIAMETER: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALWOOL SEALING ELEMENT
SEAL WIDTH0.563 INCHES NOMINAL IN
HOUSING BORE DIAMETER1.375 INCHES NOMINAL IN
CASE STYLESHOULDERED
SEALING ELEMENT STYLEVERTICAL
SPECIAL FEATURESTHREE LOCKING TABS LOCATED ON THE OD,120 DEG APART
MATERIALSTEEL CASE
ACCOMMODATED SHAFT DIAMETER0.688 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
2245-1-5Interchangeable
interchangeable cross-reference
interchangeable
31-3881-2Interchangeable
interchangeable cross-reference
interchangeable
48-201Interchangeable
interchangeable cross-reference
interchangeable
818191Interchangeable
interchangeable cross-reference
interchangeable
2284310Interchangeable
Same NIIN cross-reference
interchangeable
225805Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 65BC31?
65BC31 is a SEAL,PLAIN ENCASED.
What parts can replace 65BC31?
There are 8 known substitutes for 65BC31: 2245-1-5, 31-3881-2, 48-201 and 5 more. Substitute compatibility should be verified for your specific system.
Is 65BC31 still available?
65BC31 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