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GRP78-077 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

GRP78-077: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER POLYURETHANE OVERALL, temp_rating: -40.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL OVERALL, special_features: CROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200, peripheral_diameter: 0.678 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN, center_hole_diameter: 0.544 INCHES MINIMUM AND 0.558 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-103-2968, 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
GRP78-077
NSN: 5330-00-103-2968
NIINs: 001032968, 010844571
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER POLYURETHANE OVERALL
temp_rating-40.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL OVERALL
special_featuresCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
peripheral_diameter0.678 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN
center_hole_diameter0.544 INCHES MINIMUM AND 0.558 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN5330-00-103-2968
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GRP78-077 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
•
TEMP RATING: -40.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL OVERALL
•
PERIPHERAL DIAMETER: 0.678 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.544 INCHES MINIMUM AND 0.558 INCHES MAXIMUM IN
•
MATERIAL: RUBBER POLYURETHANE OVERALL
TECHNICAL CHARACTERISTICS
TEMP RATING-40.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL OVERALL
PERIPHERAL DIAMETER0.678 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN
SPECIAL FEATURESCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
CENTER HOLE DIAMETER0.544 INCHES MINIMUM AND 0.558 INCHES MAXIMUM IN
MATERIALRUBBER POLYURETHANE OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
78-077Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GRP78-077?
GRP78-077 is a O-RING.
What parts can replace GRP78-077?
There is 1 known substitute for GRP78-077: 78-077. Substitute compatibility should be verified for your specific system.
What is the NSN for GRP78-077?
GRP78-077 is cataloged in the U.S. Government catalog under NSN 5330-00-103-2968. This indicates validated use in U.S. government and defense supply chains.
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