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Technical Data Sheet
PartsTable / COMPONENT / NS4050-11
NS4050-11 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, temp_rating: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF, hardness_rating: 65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE DUROMETER A MAXIMUM OVERALL, peripheral_diameter: 3.469 INCHES NOMINAL IN, center_hole_diameter: 3.156 INCHES NOMINAL IN, cross-sectional_height: 0.328 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 5330-00-275-3473, 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
NS4050-11
NSN: 5330-00-275-3473
FSC: 5330
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
temp_rating-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
hardness_rating65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE DUROMETER A MAXIMUM OVERALL
peripheral_diameter3.469 INCHES NOMINAL IN
center_hole_diameter3.156 INCHES NOMINAL IN
cross-sectional_height0.328 INCHES NOMINAL IN
material_document_and_classificationMIL-P-5516,CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-275-3473
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NS4050-11 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 HEIGHT: 0.328 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 3.469 INCHES NOMINAL IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-5516,CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
•
CENTER HOLE DIAMETER: 3.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.328 INCHES NOMINAL IN
PERIPHERAL DIAMETER3.469 INCHES NOMINAL IN
TEMP RATING-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-5516,CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
CENTER HOLE DIAMETER3.156 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
300138Interchangeable
interchangeable cross-reference
interchangeable
3000-225Interchangeable
interchangeable cross-reference
interchangeable
3000-138Interchangeable
interchangeable cross-reference
interchangeable
3000-176Interchangeable
interchangeable cross-reference
interchangeable
MX-18282/PVS-7BInterchangeable
interchangeable cross-reference
interchangeable
300138-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NS4050-11?
NS4050-11 is a PACKING,PREFORMED.
What parts can replace NS4050-11?
There are 9 known substitutes for NS4050-11: 300138, 3000-225, 3000-138 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NS4050-11?
NS4050-11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-275-3473. 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