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Technical Data Sheet
PartsTable / COMPONENT / S3-51-1081
S3-51-1081 ✓ 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 ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 1.375 INCHES NOMINAL IN, material: COTTON AND RUBBER SYNTHETIC TOP RING, joint_type: SCARF-PERIPHERAL INTERMEDIATE RING, inside_diameter: 4.500 INCHES NOMINAL IN, outside_diameter: 5.375 INCHES NOMINAL IN, cross-sectional_shape_style: ANGLE TOP RING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-839-9973, 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
S3-51-1081
NSN: 5330-00-839-9973
FSC: 5330
CAGE: 1K209 — PARKER HANNIFIN CORP ENGINEERED POLYMER SYSTEMS DIV (USA)
SPECIFICATIONS
height1.375 INCHES NOMINAL IN
materialCOTTON AND RUBBER SYNTHETIC TOP RING
joint_typeSCARF-PERIPHERAL INTERMEDIATE RING
inside_diameter4.500 INCHES NOMINAL IN
outside_diameter5.375 INCHES NOMINAL IN
intermediate_ring_quantity4
cross-sectional_shape_styleANGLE TOP RING
NSN5330-00-839-9973
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S3-51-1081 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: V INTERMEDIATE RING
•
OUTSIDE DIAMETER: 5.375 INCHES NOMINAL IN
•
MATERIAL: COTTON OR RUBBER SYNTHETIC BOTTOM RING
•
HEIGHT: 1.375 INCHES NOMINAL IN
•
JOINT TYPE: SCARF-PERIPHERAL TOP RING
•
INTERMEDIATE RING QUANTITY: 4
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEV INTERMEDIATE RING
OUTSIDE DIAMETER5.375 INCHES NOMINAL IN
MATERIALCOTTON OR RUBBER SYNTHETIC BOTTOM RING
CROSS-SECTIONAL SHAPE STYLEU BOTTOM RING
HEIGHT1.375 INCHES NOMINAL IN
JOINT TYPESCARF-PERIPHERAL TOP RING
CROSS-SECTIONAL SHAPE STYLEANGLE TOP RING
INTERMEDIATE RING QUANTITY4
JOINT TYPESCARF-PERIPHERAL BOTTOM RING
JOINT TYPESCARF-PERIPHERAL INTERMEDIATE RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
S351Interchangeable
interchangeable cross-reference
interchangeable
4004T46P04Interchangeable
interchangeable cross-reference
interchangeable
182-1156Interchangeable
interchangeable cross-reference
interchangeable
122357-70Interchangeable
interchangeable cross-reference
interchangeable
MT214Interchangeable
interchangeable cross-reference
interchangeable
SC2048Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S3-51-1081?
S3-51-1081 is a PACKING ASSEMBLY.
What parts can replace S3-51-1081?
There are 15 known substitutes for S3-51-1081: S351, 4004T46P04, 182-1156 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S3-51-1081?
S3-51-1081 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-839-9973. 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