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4D139 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4D139: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: RUBBER SILICONE CLASS Q OVERALL, construction: SOLIDSOLID, cross-sectional_width: 2.375 INCHES NOMINAL2.375 INCHES NOMINAL IN, cross-sectional_height: 0.875 INCHES NOMINAL0.875 INCHES NOMINAL IN, cross-sectional_thickness: 0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN, cross-sectional_shape_style: HOLLOW BULBHOLLOW BULB. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-252-9215, 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
4D139
NSN: 5330-01-252-9215
FSC: 5330 — Packing and Gasket Materials
CAGE: 08929 — ALLEN TOOL PHOENIX, INC (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q OVERALL
constructionSOLIDSOLID
cross-sectional_width2.375 INCHES NOMINAL2.375 INCHES NOMINAL IN
cross-sectional_height0.875 INCHES NOMINAL0.875 INCHES NOMINAL IN
cross-sectional_thickness0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN
cross-sectional_shape_styleHOLLOW BULBHOLLOW BULB
cross_section_inside_diameter0.499 INCHES NOMINAL0.499 INCHES NOMINAL IN
material_document_and_classificationZZ-R-765 CL2BGR40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-252-9215
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4D139 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: 0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.875 INCHES NOMINAL0.875 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 2.375 INCHES NOMINAL2.375 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765 CL2BGR40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: HOLLOW BULBHOLLOW BULB
•
CROSS SECTION INSIDE DIAMETER: 0.499 INCHES NOMINAL0.499 INCHES NOMINAL IN
•
MATERIAL: RUBBER SILICONE CLASS Q OVERALL
•
CONSTRUCTION: SOLIDSOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.875 INCHES NOMINAL0.875 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH2.375 INCHES NOMINAL2.375 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765 CL2BGR40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLEHOLLOW BULBHOLLOW BULB
CROSS SECTION INSIDE DIAMETER0.499 INCHES NOMINAL0.499 INCHES NOMINAL IN
MATERIALRUBBER SILICONE CLASS Q OVERALL
CONSTRUCTIONSOLIDSOLID
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

No substitute or cross-reference records for this part.

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 4D139?
4D139 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for 4D139?
4D139 is cataloged in the U.S. Government catalog under NSN 5330-01-252-9215. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.