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Technical Data Sheet
PartsTable / COMPONENT / 20370-1
20370-1 ✓ 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 PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.240 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN, temp_rating: -67.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF, housing_bore_diameter: 1.560 INCHES MINIMUM AND 1.562 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 5340-00-156-6495, 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
20370-1
NSN: 5340-00-156-6495
FSC: 5340
CAGE: 62143 — NORTHERN TELECOM INC TELECOM DISTRIBUTION DIV (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.240 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN
temp_rating-67.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF
housing_bore_diameter1.560 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.125 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed8000 FEET PER MINUTE FT
NSN5340-00-156-6495
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20370-1 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
7161-17Interchangeable
interchangeable cross-reference
interchangeable
MS82497Interchangeable
interchangeable cross-reference
interchangeable
8720780Interchangeable
interchangeable cross-reference
interchangeable
540556Interchangeable
interchangeable cross-reference
interchangeable
20370-1Interchangeable
interchangeable cross-reference
interchangeable
CR11067Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20370-1?
20370-1 is a PLATE,MOUNTING.
What parts can replace 20370-1?
There are 6 known substitutes for 20370-1: 7161-17, MS82497, 8720780 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20370-1?
20370-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-156-6495. 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