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Technical Data Sheet
PartsTable / COMPONENT / 1531R25
1531R25 ✓ 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: COPPER ALLOY CASE, case_style: SQUARE, seal_width: 0.391 INCHES NOMINAL IN, housing_bore_diameter: 1.499 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 0.875 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 5330-00-178-6869, 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
1531R25
NSN: 5330-00-178-6869
FSC: 5330
CAGE: 30760 — INGERSOLL RAND CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY CASE
case_styleSQUARE
seal_width0.391 INCHES NOMINAL IN
housing_bore_diameter1.499 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter0.875 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-178-6869
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1531R25 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
•
HOUSING BORE DIAMETER: 1.499 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
SEALING ELEMENT STYLE: ANGULAR
•
SEAL WIDTH: 0.391 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY CASE
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
ACCOMMODATED SHAFT DIAMETER: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER1.499 INCHES NOMINAL IN
CASE STYLESQUARE
SEALING ELEMENT STYLEANGULAR
SEAL WIDTH0.391 INCHES NOMINAL IN
MATERIALCOPPER ALLOY CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
ACCOMMODATED SHAFT DIAMETER0.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
HP3-EXBHB90Interchangeable
interchangeable cross-reference
interchangeable
NEMA-HP3Interchangeable
interchangeable cross-reference
interchangeable
MIL-W-16878/4Interchangeable
interchangeable cross-reference
interchangeable
23400Interchangeable
interchangeable cross-reference
interchangeable
LS3469Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1531R25?
1531R25 is a SEAL,PLAIN ENCASED.
What parts can replace 1531R25?
There are 18 known substitutes for 1531R25: HP3-EXBHB90, NEMA-HP3, MIL-W-16878/4 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1531R25?
1531R25 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-178-6869. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026