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AA-1988 4IN — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AA-1988 4IN: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SPREADER, seal_width: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN, construction: SOLID, housing_bore_diameter: 7.040 INCHES NOMINAL IN, accommodated_shaft_diameter: 6.340 INCHES MINIMUM AND 6.380 INCHES MAXIMUM IN, cross-sectional_shape_style: C-SECTION W/ FLAT SPRING. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-076-4968, 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
AA-1988 4IN
NSN: 5330-01-076-4968
FSC: 5330 — Packing and Gasket Materials
CAGE: 53424 — CUNICO CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SPREADER
seal_width0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
constructionSOLID
housing_bore_diameter7.040 INCHES NOMINAL IN
accommodated_shaft_diameter6.340 INCHES MINIMUM AND 6.380 INCHES MAXIMUM IN
cross-sectional_shape_styleC-SECTION W/ FLAT SPRING
NSN5330-01-076-4968
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AA-1988 4IN 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
•
SEAL WIDTH: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 7.040 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: C-SECTION W/ FLAT SPRING
•
ACCOMMODATED SHAFT DIAMETER: 6.340 INCHES MINIMUM AND 6.380 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE SEALING ELEMENT
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
HOUSING BORE DIAMETER7.040 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEC-SECTION W/ FLAT SPRING
ACCOMMODATED SHAFT DIAMETER6.340 INCHES MINIMUM AND 6.380 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE SEALING ELEMENT
MATERIALRUBBER SYNTHETIC SPREADER
CONSTRUCTIONSOLID
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
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 AA-1988 4IN?
AA-1988 4IN is a SEAL,PLAIN.
What is the NSN for AA-1988 4IN?
AA-1988 4IN is cataloged in the U.S. Government catalog under NSN 5330-01-076-4968. This indicates validated use in U.S. government and defense supply chains.
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