PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 500-637-12BW
500-637-12BW ✓ 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: RECESSED, seal_width: 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, housing_bore_diameter: 6.373 INCHES MINIMUM AND 6.377 INCHES MAXIMUM IN, sealing_element_style: ANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-477-0533, 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
500-637-12BW
NSN: 5330-00-477-0533
FSC: 5330
CAGE: 71724 — JOHN CRANE, INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
case_styleRECESSED
seal_width0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
housing_bore_diameter6.373 INCHES MINIMUM AND 6.377 INCHES MAXIMUM IN
sealing_element_styleANGULAR
accommodated_shaft_diameter4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-477-0533
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 500-637-12BW 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
•
CASE STYLE: RECESSED
•
SEAL WIDTH: 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
SEALING ELEMENT STYLE: ANGULAR
•
ACCOMMODATED SHAFT DIAMETER: 4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 6.373 INCHES MINIMUM AND 6.377 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
•
TEMP RATING: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLERECESSED
SEAL WIDTH0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT DIAMETER4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN
HOUSING BORE DIAMETER6.373 INCHES MINIMUM AND 6.377 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
TEMP RATING-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
SN74LS76JInterchangeable
interchangeable cross-reference
interchangeable
01-49420-23Interchangeable
interchangeable cross-reference
interchangeable
SN54LS76JInterchangeable
interchangeable cross-reference
interchangeable
102945-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 500-637-12BW?
500-637-12BW is a SEAL,PLAIN ENCASED.
What parts can replace 500-637-12BW?
There are 4 known substitutes for 500-637-12BW: SN74LS76J, 01-49420-23, SN54LS76J and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 500-637-12BW?
500-637-12BW is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-477-0533. 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