This is an RC-scale replacement O-ring made for maintenance of the Serpent Mini Spyder Monster truck RTR EP SER440001. The part is identified as Serpent 110315 and carries the 7x1 size designation, suitable where small sealing rings are required on chassis or drivetrain components.
Typical use is to restore seals that block dirt ingress and prevent fluid migration around compact assemblies; replace rings that show hardening, cracking, flattening, or other deformation. As a simple elastomer seal, its main role is preventative maintenance and minor repair to keep suspension and drivetrain seals working during off-road running or bashing.
Fitting is simple: remove the old ring, clean the groove, and press in the new 7x1 O-ring so it seats flush without twisting. A light smear of an RC-safe lubricant can help installation and extend sealing life, but avoid excess that attracts grit. Store spares in a cool, dry place away from direct sunlight to limit premature hardening.
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