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Technical Data Sheet
PartsTable / COMPONENT / 3B1571
3B1571 ✓ 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: LEATHER SEALING ELEMENT, case_style: SQUARE, seal_width: 0.625 INCHES NOMINAL IN, housing_bore_diameter: 6.749 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 5.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-178-7622, 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
3B1571
NSN: 5330-00-178-7622
FSC: 5330
CAGE: 82005 — ALLARD NAZARIAN GROUP, INC. DBA GRANITE STATE MANUFACTURING (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.625 INCHES NOMINAL IN
housing_bore_diameter6.749 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter5.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-178-7622
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3B1571 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
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
MATERIAL: LEATHER SEALING ELEMENT
•
ACCOMMODATED SHAFT DIAMETER: 5.500 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 6.749 INCHES NOMINAL IN
•
SEAL WIDTH: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
MATERIALLEATHER SEALING ELEMENT
ACCOMMODATED SHAFT DIAMETER5.500 INCHES NOMINAL IN
MATERIALSTEEL CASE
HOUSING BORE DIAMETER6.749 INCHES NOMINAL IN
SEAL WIDTH0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
12Z369-61Interchangeable
interchangeable cross-reference
interchangeable
202554-27Interchangeable
interchangeable cross-reference
interchangeable
7026Interchangeable
interchangeable cross-reference
interchangeable
400797PC4Interchangeable
interchangeable cross-reference
interchangeable
54950Interchangeable
interchangeable cross-reference
interchangeable
B32818Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3B1571?
3B1571 is a SEAL,PLAIN ENCASED.
What parts can replace 3B1571?
There are 23 known substitutes for 3B1571: 12Z369-61, 202554-27, 7026 and 20 more. Substitute compatibility should be verified for your specific system.
Is 3B1571 still available?
3B1571 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