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18278 — DAMPER,FORCED DRAFT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

18278: DAMPER,FORCED DRAFT.

The DAMPER,FORCED DRAFT is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-371-6012, 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
18278
NSN: 5330-00-371-6012
NIINs: 003716012, 010075915, 013181905, 013331826
FSC: 5330 — Packing and Gasket Materials
CAGE: 88687 — CHICAGO PNEUMATIC TOOL CO (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,CORROSION RESISTING,NOTCHED FLANGE PLATE ATTACHED W/8 SOCKET HEAD SCREW AT ONE END,OTHER END THD EXTERNAL 1.000-20 UNEF RH,0.950 IN. THD LG,1.738 IN. LARGEST BODY DIA,2.630 IN. O/A LG IN
NSN5330-00-371-6012
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18278 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 THICKNESS: 0.062 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE WIDTH: 13.125 INCHES NOMINAL IN
•
APERTURE LENGTH: 18.250 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 7.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL: CORK OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
OVERALL LENGTH19.625 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH14.500 INCHES NOMINAL IN
APERTURE WIDTH13.125 INCHES NOMINAL IN
APERTURE LENGTH18.250 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH7.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALCORK OVERALL
HOLE DIAMETER1.062 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES 1
1-18278Reference 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 18278?
18278 is a DAMPER,FORCED DRAFT.
What parts can replace 18278?
There is 1 known substitute for 18278: 1-18278. Substitute compatibility should be verified for your specific system.
What is the NSN for 18278?
18278 is cataloged in the U.S. Government catalog under NSN 5330-00-371-6012. 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.