PartsTable
Technical Data Sheet
PartsTable / COMPONENT / PM21816
PM21816 ✓ 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 BRACKET,MAIN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-623-5422, 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
PM21816
NSN: 5340-00-623-5422
FSC: 5340
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
Part NumberPM21816
NSN5340-00-623-5422
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PM21816 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
21816Interchangeable
interchangeable cross-reference
interchangeable
AN363-1216Interchangeable
interchangeable cross-reference
interchangeable
40999-2614Interchangeable
interchangeable cross-reference
interchangeable
TIP35BInterchangeable
interchangeable cross-reference
interchangeable
ECG392Interchangeable
interchangeable cross-reference
interchangeable
392Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy PM21816?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is PM21816?
PM21816 is a BRACKET,MAIN.
What parts can replace PM21816?
There are 9 known substitutes for PM21816: 21816, AN363-1216, 40999-2614 and 6 more. Substitute compatibility should be verified for your specific system.
Is PM21816 still available?
PM21816 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — PM21816

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026