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S-17688-1 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

S-17688-1: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL, construction: SOLIDSOLID, cross-sectional_width: 0.470 INCHES MINIMUM AND 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN, cross-sectional_height: 0.570 INCHES MINIMUM AND 0.570 INCHES MINIMUM AND 0.630 INCHES MAXIMUM0.630 INCHES MAXIMUM IN, cross-sectional_shape_style: SPECIALSPECIAL, cross_section_inside_diameter: 0.304 INCHES MINIMUM AND 0.304 INCHES MINIMUM AND 0.364 INCHES MAXIMUM0.364 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-317-0178, 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
S-17688-1
NSN: 5330-01-317-0178
FSC: 5330 — Packing and Gasket Materials
CAGE: 75345 — KIRKHILL, INC. DBA KIRKHILL INC (USA)
SPECIFICATIONS
materialPLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL
constructionSOLIDSOLID
cross-sectional_width0.470 INCHES MINIMUM AND 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN
cross-sectional_height0.570 INCHES MINIMUM AND 0.570 INCHES MINIMUM AND 0.630 INCHES MAXIMUM0.630 INCHES MAXIMUM IN
cross-sectional_shape_styleSPECIALSPECIAL
cross_section_inside_diameter0.304 INCHES MINIMUM AND 0.304 INCHES MINIMUM AND 0.364 INCHES MAXIMUM0.364 INCHES MAXIMUM IN
NSN5330-01-317-0178
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S-17688-1 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: 0.570 INCHES MINIMUM AND 0.570 INCHES MINIMUM AND 0.630 INCHES MAXIMUM0.630 INCHES MAXIMUM IN
•
CROSS-SECTIONAL WIDTH: 0.470 INCHES MINIMUM AND 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIALSPECIAL
•
CROSS SECTION INSIDE DIAMETER: 0.304 INCHES MINIMUM AND 0.304 INCHES MINIMUM AND 0.364 INCHES MAXIMUM0.364 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL
•
CONSTRUCTION: SOLIDSOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.570 INCHES MINIMUM AND 0.570 INCHES MINIMUM AND 0.630 INCHES MAXIMUM0.630 INCHES MAXIMUM IN
CROSS-SECTIONAL WIDTH0.470 INCHES MINIMUM AND 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESPECIALSPECIAL
CROSS SECTION INSIDE DIAMETER0.304 INCHES MINIMUM AND 0.304 INCHES MINIMUM AND 0.364 INCHES MAXIMUM0.364 INCHES MAXIMUM IN
SPECIAL FEATURESHAS A LIP EXTENDING OFF THE ROUNDPORTION OF THE SEAL; MADE OF DACRON IMPREGNATED WITH FLUOROSILICONE 55 DURO STM23-403HAS A LIP EXTENDING OFF THE ROUNDPORTION OF THE SEAL; MADE OF DACRON IMPREGNATED WITH FLUOROSILICONE 55 DURO STM23-403
MATERIALPLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL
CONSTRUCTIONSOLIDSOLID
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 S-17688-1?
S-17688-1 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for S-17688-1?
S-17688-1 is cataloged in the U.S. Government catalog under NSN 5330-01-317-0178. 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.