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PR441980 — SEAL RING,METAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

PR441980: SEAL RING,METAL.

The SEAL RING,METAL is a the manufacturer industrial component. Key specifications include ring_style: EXPANDING CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.1800 INCHES MINIMUM AND 0.1810 INCHES MAXIMUM IN, outside_diameter: 2.750 INCHES NOMINAL IN, radial_wall_thickness: 0.0900 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN, cross-sectional_shape_style: PLAIN RECTANGULAR, STRAIGHT FACE. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-139-6837, 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
PR441980
NSN: 5330-01-139-6837
FSC: 5330 — Packing and Gasket Materials
CAGE: 99121 — PRECISION RINGS INCORPORATED (USA)
SPECIFICATIONS
ring_styleEXPANDING CONCENTRIC
joint_styleVERTICAL JOINT
overall_width0.1800 INCHES MINIMUM AND 0.1810 INCHES MAXIMUM IN
outside_diameter2.750 INCHES NOMINAL IN
radial_wall_thickness0.0900 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
cross-sectional_shape_stylePLAIN RECTANGULAR, STRAIGHT FACE
material_document_and_classification3039T48 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-139-6837
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PR441980 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: 3039T48 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, STRAIGHT FACE
•
OUTSIDE DIAMETER: 2.750 INCHES NOMINAL IN
•
JOINT STYLE: VERTICAL JOINT
•
RADIAL WALL THICKNESS: 0.0900 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
•
RING STYLE: EXPANDING CONCENTRIC
TECHNICAL CHARACTERISTICS
OVERALL WIDTH0.1800 INCHES MINIMUM AND 0.1810 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION3039T48 MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLEPLAIN RECTANGULAR, STRAIGHT FACE
OUTSIDE DIAMETER2.750 INCHES NOMINAL IN
JOINT STYLEVERTICAL JOINT
RADIAL WALL THICKNESS0.0900 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
RING STYLEEXPANDING CONCENTRIC
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 2
10116753Reference document
Same NSN cross-reference
Reference document — Informative reference only
3039T48P01Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is PR441980?
PR441980 is a SEAL RING,METAL.
What parts can replace PR441980?
There are 2 known substitutes for PR441980: 10116753, 3039T48P01. Substitute compatibility should be verified for your specific system.
What is the NSN for PR441980?
PR441980 is cataloged in the U.S. Government catalog under NSN 5330-01-139-6837. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.