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Technical Data Sheet
31-15-4173-1 ✓ 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: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT, case_style: SQUARE, seal_width: 0.313 INCHES NOMINAL IN, outside_diameter: 2.506 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 2.502 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-280-6775, 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
31-15-4173-1
NSN: 5330-01-280-6775
FSC: 5330
CAGE: 81361 — EDGEWOOD CHEMICAL BIOLOGICAL CENTER ECBC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
case_styleSQUARE
seal_width0.313 INCHES NOMINAL IN
outside_diameter2.506 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter2.502 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter1.563 INCHES NOMINAL IN
NSN5330-01-280-6775
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 31-15-4173-1 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
OUTSIDE DIAMETER: 2.506 INCHES NOMINAL IN
SEAL WIDTH: 0.313 INCHES NOMINAL IN
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
SEALING ELEMENT STYLE: VERTICAL
SURFACE TREATMENT: PLASTIC CASE
ACCOMMODATED SHAFT DIAMETER: 1.563 INCHES NOMINAL IN
CASE STYLE: SQUARE
HOUSING BORE DIAMETER: 2.502 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.506 INCHES NOMINAL IN
SEAL WIDTH0.313 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
SEALING ELEMENT STYLEVERTICAL
SURFACE TREATMENTPLASTIC CASE
ACCOMMODATED SHAFT DIAMETER1.563 INCHES NOMINAL IN
CASE STYLESQUARE
HOUSING BORE DIAMETER2.502 INCHES NOMINAL IN
MATERIALSTEEL CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
149135Interchangeable
interchangeable cross-reference
interchangeable
8905 HInterchangeable
interchangeable cross-reference
interchangeable
50-76-3Interchangeable
interchangeable cross-reference
interchangeable
FP52535N3PC37Interchangeable
interchangeable cross-reference
interchangeable
820659Interchangeable
interchangeable cross-reference
interchangeable
156/35Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31-15-4173-1?
31-15-4173-1 is a SEAL,PLAIN ENCASED.
What parts can replace 31-15-4173-1?
There are 12 known substitutes for 31-15-4173-1: 149135, 8905 H, 50-76-3 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31-15-4173-1?
31-15-4173-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-280-6775. This indicates validated use in U.S. government and defense supply chains.
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