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BACS45B78 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BACS45B78: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, outside_diameter: 2.820 INCHES NOMINAL IN, special_features: ONE JOINT 0.020 IN. WIDE IN, style_designator: CIRCULAR, aperture_diameter: 2.120 INCHES NOMINAL IN, cross-sectional_thickness: 0.025 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5330-01-252-3137, 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
BACS45B78
NSN: 5330-01-252-3137
FSC: 5330 — Packing and Gasket Materials
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
outside_diameter2.820 INCHES NOMINAL IN
special_featuresONE JOINT 0.020 IN. WIDE IN
style_designatorCIRCULAR
aperture_diameter2.120 INCHES NOMINAL IN
cross-sectional_thickness0.025 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationL-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-252-3137
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BACS45B78 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 THICKNESS: 0.025 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 2.820 INCHES NOMINAL IN
•
APERTURE DIAMETER: 2.120 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.025 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER2.820 INCHES NOMINAL IN
APERTURE DIAMETER2.120 INCHES NOMINAL IN
SPECIAL FEATURESONE JOINT 0.020 IN. WIDE IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
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 1
BACS11BD9Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 BACS45B78?
BACS45B78 is a GASKET.
What parts can replace BACS45B78?
There is 1 known substitute for BACS45B78: BACS11BD9. Substitute compatibility should be verified for your specific system.
What is the NSN for BACS45B78?
BACS45B78 is cataloged in the U.S. Government catalog under NSN 5330-01-252-3137. This indicates validated use in U.S. government and defense supply chains.
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