PATCH FOR LOCKING & SEALING – PRE-APPLIED TO SEELSKREW® & SEELBOLT® SELF-SEALING FASTENERS

VIBRATION-DAMPENING ACTION ON THE THREAD SURFACE is achieved while still allowing repeated adjustment & reuse.

The APM Patch dry coating process is fused to the thread surface and delivered ready to be installed without the need for curing or any other special preparation.When assembled with a mating part the resilient engineered polymer (normally Nylon) Patch is compressed providing a locking action in the thread instead of at the bearing surface due to its vibration dampening characteristics. The resilience of the APM Patch holds the fastener in place without adhesives or thread distortion. Generally the Patch coating is applied 120° to 4-6 threads, starting 1-3 threads back form the end. Modified Patch location and coating length can be specified for specific applications.

SPECIFICATIONS

Primary Useage:
Lock and Seal

Reusability:
Up to 15 on-off cycles

Material:
Nylon 11

Color:
Yellow (other colors available upon request*)

Hardness:
Shore D (ASTM D2240) 70-80 Durometer

Salt Spray Resistance:
(ASTM B117) 1000+ hours (X scribe)

Taber Abrasion:
(ASTM D4060) 10-18 mg loss CS-10 wheel, 1000 g load, 1000 cycles (varies with color)

Dielectric Strength:
(ASTM D149) 800-1200 volts/mil @10.0 mils (varies with color)

Direct Impact resistance:
(MPTM 0002) 160 in. lbs. (@10.0 mils)

Shelf Life:
The on part shelf life is at least one year under ideal storage conditions (+4°C to +32°C, or +40°F to +90°F).

MIL-DTL-18240F require yellow Nylon

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