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Technical Data Sheet
PartsTable / COMPONENT / 287-1020PT20SUB23
287-1020PT20SUB23 ✓ 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 is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT, seal_width: 0.375 INCHES NOMINAL IN, temp_rating: -40.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF, construction: SOLID, housing_bore_diameter: 5.007 INCHES NOMINAL IN, accommodated_shaft_diameter: 4.062 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 5330-00-297-4457, 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
287-1020PT20SUB23
NSN: 5330-00-297-4457
FSC: 5330
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
seal_width0.375 INCHES NOMINAL IN
temp_rating-40.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF
constructionSOLID
housing_bore_diameter5.007 INCHES NOMINAL IN
accommodated_shaft_diameter4.062 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
material_document_and_classificationMIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
NSN5330-00-297-4457
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 287-1020PT20SUB23 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
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
CONSTRUCTION: SOLID
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
•
SEAL WIDTH: 0.375 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 4.062 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 5.007 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
CONSTRUCTIONSOLID
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
MATERIALSTEEL CORROSION RESISTING SPRING
SEAL WIDTH0.375 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER4.062 INCHES NOMINAL IN
HOUSING BORE DIAMETER5.007 INCHES NOMINAL IN
TEMP RATING-40.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
5711Interchangeable
interchangeable cross-reference
interchangeable
386SIZE1-2INInterchangeable
interchangeable cross-reference
interchangeable
B16.11Interchangeable
interchangeable cross-reference
interchangeable
MS14304-1C08Interchangeable
interchangeable cross-reference
interchangeable
5-7-11/REAR ADM SIZE 4/57X81INInterchangeable
interchangeable cross-reference
interchangeable
5-7-11 REAR ADM SIZE 4/57X81INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 287-1020PT20SUB23?
287-1020PT20SUB23 is a SEAL,PLAIN.
What parts can replace 287-1020PT20SUB23?
There are 17 known substitutes for 287-1020PT20SUB23: 5711, 386SIZE1-2IN, B16.11 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 287-1020PT20SUB23?
287-1020PT20SUB23 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-297-4457. 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