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H-1221 — VALVE,PNEUMATIC TANK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H-1221: VALVE,PNEUMATIC TANK.

The VALVE,PNEUMATIC TANK is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYVINYL, overall_height: 0.745 INCHES NOMINAL IN, special_features: RESISTS TEARING, CRACKING, SPLITTING AND SHREDDING, RED, supplementary_features: SERVICE TEMPERATURE -26 - 350F OR -32 - 176 C, open_end_inside_diameter: 0.790 INCHES NOMINAL IN, closed_end_overall_diameter: 1.106 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-807-9001, 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
H-1221
NSN: 5340-00-807-9001
NIINs: 008079001, 014943105
FSC: 5340 — Hardware, Commercial
CAGE: 83014 — HARTWELL CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL
overall_height0.745 INCHES NOMINAL IN
special_featuresRESISTS TEARING, CRACKING, SPLITTING AND SHREDDING, RED
supplementary_featuresSERVICE TEMPERATURE -26 - 350F OR -32 - 176 C
open_end_inside_diameter0.790 INCHES NOMINAL IN
closed_end_overall_diameter1.106 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyFLEXIBLE TAPERED CAPS AND PLUGS
NSN5340-00-807-9001
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H-1221 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H-1221?
H-1221 is a VALVE,PNEUMATIC TANK.
What is the NSN for H-1221?
H-1221 is cataloged in the U.S. Government catalog under NSN 5340-00-807-9001. 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.