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PartsTable / COMPONENT / MIL-R-15624 CL 3
MIL-R-15624 CL 3 ✓ 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,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, overall_length: 36.000 INCHES NOMINAL IN, hardness_rating: 50.0 SHORE DUROMETER A MAXIMUM OVERALL, style_designator: SQUARE, cross-sectional_thickness: 0.250 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-257-4322, 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
MIL-R-15624 CL 3
NSN: 5330-01-257-4322
FSC: 5330
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
overall_length36.000 INCHES NOMINAL IN
hardness_rating50.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorSQUARE
cross-sectional_thickness0.250 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-R-15624,CLASS 3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-257-4322
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-R-15624 CL 3 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
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
CENTER HOLE DIAMETER: 1.875 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-15624 CLASS 3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
•
PERIPHERAL DIAMETER: 2.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
CROSS-SECTIONAL HEIGHT: 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONFEAT
CENTER HOLE DIAMETER1.875 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-15624 CLASS 3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
PERIPHERAL DIAMETER2.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
SPECIAL FEATURESMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
CROSS-SECTIONAL HEIGHT0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
18658Interchangeable
interchangeable cross-reference
interchangeable
138612Interchangeable
interchangeable cross-reference
interchangeable
16858Interchangeable
interchangeable cross-reference
interchangeable
100908-5Interchangeable
interchangeable cross-reference
interchangeable
0624-0640Interchangeable
interchangeable cross-reference
interchangeable
30743Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-R-15624 CL 3?
MIL-R-15624 CL 3 is a PACKING,PREFORMED.
What parts can replace MIL-R-15624 CL 3?
There are 15 known substitutes for MIL-R-15624 CL 3: 18658, 138612, 16858 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-R-15624 CL 3?
MIL-R-15624 CL 3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-257-4322. 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