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3821988 — SUPPORT,STRUCTURAL COMPONENT,GUI

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3821988: SUPPORT,STRUCTURAL COMPONENT,GUI.

SUPPORT,STRUCTURAL COMPONENT,GUI. Key specifications include material: STEEL COMP 1009, overall_height: 10.120 INCHES NOMINAL IN, overall_length: 21.380 INCHES NOMINAL IN, end_item_identification: CONTROL CNU-402, general_characteristics_item_description: MATL .060 SHEET,1005-1020 STEEL PER ASTM A366. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-360-8875, 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
3821988
NSN: 5340-01-360-8875
NIINs: 013608875, 013615918
FSC: 5340 — Hardware, Commercial
CAGE: 18894 — AIR ARMAMENT CENTER/ EN (USA)
SPECIFICATIONS
materialSTEEL COMP 1009
overall_height10.120 INCHES NOMINAL IN
overall_length21.380 INCHES NOMINAL IN
end_item_identificationCONTROL CNU-402
general_characteristics_item_descriptionMATL .060 SHEET,1005-1020 STEEL PER ASTM A366
NSN5340-01-360-8875
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3821988 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
•
MATERIAL: STEEL COMP 1009
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT10.120 INCHES NOMINAL IN
OVERALL LENGTH21.380 INCHES NOMINAL IN
MATERIALSTEEL COMP 1009
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 3821988?
3821988 is a SUPPORT,STRUCTURAL COMPONENT,GUI.
What is the NSN for 3821988?
3821988 is cataloged in the U.S. Government catalog under NSN 5340-01-360-8875. This indicates validated use in U.S. government and defense supply chains.
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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.