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909-20 — DUMMY LOAD,ELECTRICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

909-20: DUMMY LOAD,ELECTRICAL.

The DUMMY LOAD,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, power_rating: 500.000 WATTS AVERAGE, overall_width: 2.750 INCHES MAXIMUM IN, overall_height: 2.750 INCHES MAXIMUM IN, overall_length: 5.750 INCHES MAXIMUM IN, special_features: IDENTIFICATION MARKERS,CONDUIT ASSEMBLIES,CONNECTOR PLUG PROTECTIVE CAPS. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-510-1616, 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
909-20
NSN: 5331-00-510-1616
NIINs: 005101616, 008519020, 012499991, 015045714, 015138479, 015563215
FSC: 5331 — O-ring
CAGE: 77360 — PRATT READ AND CO DIV OF PRATT READ CORP (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
power_rating500.000 WATTS AVERAGE
overall_width2.750 INCHES MAXIMUM IN
overall_height2.750 INCHES MAXIMUM IN
overall_length5.750 INCHES MAXIMUM IN
branch_quantity6
special_featuresIDENTIFICATION MARKERS,CONDUIT ASSEMBLIES,CONNECTOR PLUG PROTECTIVE CAPS
style_designatorWAVEGUIDE MOUNTED
termination_typeCONNECTOR PLUG BOTH ENDS ALL CONDUCTORS
conductor_quantity150
cross-sectional_height0.139 INCHES NOMINAL IN
frequency_range_rating+8.200 TO 12.400 GIGAHERTZ
NSN5331-00-510-1616
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 909-20 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 HEIGHT: 0.139 INCHES NOMINAL IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.139 INCHES NOMINAL IN
MATERIALRUBBER
SUBSTITUTES & CROSS-REFERENCES 2
81139Reference document
Same NSN cross-reference
Reference document — Secondary reference
A81139REVBReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 909-20?
909-20 is a DUMMY LOAD,ELECTRICAL.
What parts can replace 909-20?
There are 2 known substitutes for 909-20: 81139, A81139REVB. Substitute compatibility should be verified for your specific system.
What is the NSN for 909-20?
909-20 is cataloged in the U.S. Government catalog under NSN 5331-00-510-1616. 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.