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538411-012BAK1 — PACKING ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

538411-012BAK1: PACKING ASSEMBLY.

The PACKING ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 0.141 INCHES NOMINAL IN, material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR INTERMEDIATE RING, joint_type: SCARF-PERIPHERAL BOTTOM RING, temp_rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF, inside_diameter: 0.350 INCHES NOMINAL IN, outside_diameter: 0.490 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-004-4119, 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
538411-012BAK1
NSN: 5330-01-004-4119
FSC: 5330 — Packing and Gasket Materials
CAGE: 09257 — TRELLEBORG SEALING SOLUTIONS US, INC. (USA)
SPECIFICATIONS
height0.141 INCHES NOMINAL IN
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR INTERMEDIATE RING
joint_typeSCARF-PERIPHERAL BOTTOM RING
temp_rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
inside_diameter0.350 INCHES NOMINAL IN
outside_diameter0.490 INCHES NOMINAL IN
intermediate_ring_quantity1
cross-sectional_shape_styleSQUARE/RECTANGULAR TOP RING
specification/standard_data76301-ST7-288 MANUFACTURERS SPECIFICATION
material_document_and_classificationMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE TOP RING
NSN5330-01-004-4119
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 538411-012BAK1 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: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
•
INTERMEDIATE RING QUANTITY: 1
•
OUTSIDE DIAMETER: 0.490 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE INTERMEDIATE RING
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR BOTTOM RING
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
INTERMEDIATE RING QUANTITY1
OUTSIDE DIAMETER0.490 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE INTERMEDIATE RING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE BOTTOM RING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE TOP RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR BOTTOM RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR TOP RING
CROSS-SECTIONAL SHAPE STYLESPECIAL INTERMEDIATE RING
SPECIFICATION/STANDARD DATA76301-ST7-288 MANUFACTURERS SPECIFICATION
SUBSTITUTES & CROSS-REFERENCES 2
ST7M288-012-2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
7012FS160TReference 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 538411-012BAK1?
538411-012BAK1 is a PACKING ASSEMBLY.
What parts can replace 538411-012BAK1?
There are 2 known substitutes for 538411-012BAK1: ST7M288-012-2, 7012FS160T. Substitute compatibility should be verified for your specific system.
What is the NSN for 538411-012BAK1?
538411-012BAK1 is cataloged in the U.S. Government catalog under NSN 5330-01-004-4119. This indicates validated use in U.S. government and defense supply chains.
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