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PartsTable / COMPONENT / PM21794
PM21794 ✓ 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 WITH RETAINER is a the manufacturer industrial component. Key specifications include construction: TWO-PIECE, outside_diameter: 0.490 INCHES NOMINAL IN, retainer_thickness: 0.070 INCHES NOMINAL IN, packing_inside_diameter: 0.150 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-402-9893, 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
PM21794
NSN: 5330-00-402-9893
FSC: 5330
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
constructionTWO-PIECE
outside_diameter0.490 INCHES NOMINAL IN
retainer_thickness0.070 INCHES NOMINAL IN
packing_inside_diameter0.150 INCHES NOMINAL IN
NSN5330-00-402-9893
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PM21794 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
•
OUTSIDE DIAMETER: 0.490 INCHES NOMINAL IN
•
RETAINER THICKNESS: 0.070 INCHES NOMINAL IN
•
CONSTRUCTION: TWO-PIECE
•
PACKING INSIDE DIAMETER: 0.150 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.490 INCHES NOMINAL IN
RETAINER THICKNESS0.070 INCHES NOMINAL IN
CONSTRUCTIONTWO-PIECE
PACKING INSIDE DIAMETER0.150 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
13218E0122-13Interchangeable
interchangeable cross-reference
interchangeable
5406-P-4Interchangeable
interchangeable cross-reference
interchangeable
5M6213Interchangeable
interchangeable cross-reference
interchangeable
21794Interchangeable
interchangeable cross-reference
interchangeable
C209-8Interchangeable
interchangeable cross-reference
interchangeable
88-22096-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PM21794?
PM21794 is a PACKING WITH RETAINER.
What parts can replace PM21794?
There are 16 known substitutes for PM21794: 13218E0122-13, 5406-P-4, 5M6213 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PM21794?
PM21794 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-402-9893. 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