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155-921 — PACKING WITH RETAINER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

155-921: PACKING WITH RETAINER.

The PACKING WITH RETAINER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY RETAINER, construction: ONE-PIECE, outside_diameter: 0.406 INCHES NOMINAL IN, retainer_thickness: 0.219 INCHES NOMINAL IN, packing_inside_diameter: 0.290 INCHES NOMINAL IN, packing_ring_cross-sectional_diameter: 0.085 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-630-4451, 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
155-921
NSN: 5330-00-630-4451
FSC: 5330 — Packing and Gasket Materials
CAGE: 25980 — GRACO INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY RETAINER
constructionONE-PIECE
outside_diameter0.406 INCHES NOMINAL IN
retainer_thickness0.219 INCHES NOMINAL IN
packing_inside_diameter0.290 INCHES NOMINAL IN
packing_ring_cross-sectional_diameter0.085 INCHES NOMINAL IN
NSN5330-00-630-4451
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 155-921 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
•
PACKING INSIDE DIAMETER: 0.290 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.406 INCHES NOMINAL IN
•
PACKING RING CROSS-SECTIONAL DIAMETER: 0.085 INCHES NOMINAL IN
•
RETAINER THICKNESS: 0.219 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC PACKING
•
CONSTRUCTION: ONE-PIECE
TECHNICAL CHARACTERISTICS
PACKING INSIDE DIAMETER0.290 INCHES NOMINAL IN
OUTSIDE DIAMETER0.406 INCHES NOMINAL IN
PACKING RING CROSS-SECTIONAL DIAMETER0.085 INCHES NOMINAL IN
RETAINER THICKNESS0.219 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC PACKING
MATERIALCOPPER ALLOY RETAINER
CONSTRUCTIONONE-PIECE
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 155-921?
155-921 is a PACKING WITH RETAINER.
What is the NSN for 155-921?
155-921 is cataloged in the U.S. Government catalog under NSN 5330-00-630-4451. 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.