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MIL-P-16685 — PACKING ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MIL-P-16685: PACKING ASSEMBLY.

The PACKING ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 2.125 INCHES NOMINAL IN, material: GRAPHITE AND PLASTIC POLYTETRAFLUOROETHYLENE BOTTOM RING, joint_type: BUTT INTERMEDIATE RING, inside_diameter: 2.143 INCHES NOMINAL IN, outside_diameter: 2.875 INCHES NOMINAL IN, special_features: INTERMEDIATE RINGS MAY BE CONTINUOUS;MATERIAL PER MIL-P-16685D AMENDMENT 2. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-249-1999, 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
MIL-P-16685
NSN: 5330-00-249-1999
NIINs: 002491999, 002648459, 002648460, 002648461, 002648462, 002648463, 002648465, 002648468, 011453174, 011563785, 011586287, 012244025, 013757180, 013760811, 013760812, 013760813, 013760814, 013760815, 013760816, 013760818, 013760819, 013760820, 013764460, 013764461, 013764462, 013764463, 013777252, 013779233, 013827545, 013827673, 013827680, 013827684, 013828073, 013828079, 013828080, 013828109, 013828179, 013828269, 013828274, 013874297, 013874311, 013874321, 013874322, 013874323, 013874325, 013874329, 014107156, 014107157, 014107158, 014107160, 014107163, 014451475, 015077223, 015077224, 015077225, 015309722, 015753842
FSC: 5330 — Packing and Gasket Materials
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
height2.125 INCHES NOMINAL IN
materialGRAPHITE AND PLASTIC POLYTETRAFLUOROETHYLENE BOTTOM RING
joint_typeBUTT INTERMEDIATE RING
inside_diameter2.143 INCHES NOMINAL IN
outside_diameter2.875 INCHES NOMINAL IN
special_featuresINTERMEDIATE RINGS MAY BE CONTINUOUS;MATERIAL PER MIL-P-16685D AMENDMENT 2
intermediate_ring_quantity6
cross-sectional_shape_styleANGLE BOTTOM RING
nondefinitive_spec/std_data2 CLASS AND 2 TYPE AND B SIZE
material_document_and_classificationMIL-+16685 CL 1, COMP B MIL SPEC SINGLE MATERIAL RESPONSE INTERMEDIATE RING
NSN5330-00-249-1999
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-P-16685 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
•
TEMP RATING: 212.0 FAHRENHEIT DEGF
•
OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-16685 CL 2,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE BOTTOM RING
•
CROSS-SECTIONAL SHAPE STYLE: CUP BOTTOM RING
•
NONDEFINITIVE SPEC/STD DATA: 2 CLASS AND 2 TYPE AND B SIZE
TECHNICAL CHARACTERISTICS
TEMP RATING212.0 FAHRENHEIT DEGF
OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-16685 CL 2,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE BOTTOM RING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-16685 CL 2,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE TOP RING
CROSS-SECTIONAL SHAPE STYLECUP BOTTOM RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR TOP RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR INTERMEDIATE RING
NONDEFINITIVE SPEC/STD DATA2 CLASS AND 2 TYPE AND B SIZE
INSIDE DIAMETER0.480 INCHES NOMINAL IN
HEIGHT1.125 INCHES NOMINAL IN
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 6
9000S6202-7328GReference document
Same NSN cross-reference
Reference document — Design control — primary reference
MIL-DTL-16685Reference document
Same NSN cross-reference
Reference document — Identification reference
1756480Reference document
Same NSN cross-reference
Reference document — Secondary reference
326197PC2Reference document
Same NSN cross-reference
Reference document — Secondary reference
687792PC2Reference document
Same NSN cross-reference
Reference document — Secondary reference
562280BPC2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MIL-P-16685?
MIL-P-16685 is a PACKING ASSEMBLY.
What parts can replace MIL-P-16685?
There are 6 known substitutes for MIL-P-16685: 9000S6202-7328G, MIL-DTL-16685, 1756480 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-P-16685?
MIL-P-16685 is cataloged in the U.S. Government catalog under NSN 5330-00-249-1999. 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.