This Nocturnal Lights O-Ring Kit is a replacement o-ring for the Nocturnal Lights SLX and SL50 light series. The lights use a double o-ring for extra safety. The o-ring resembling a thick rubber band is designed to establish a watertight seal when going underwater.
Manufactured to precision tolerances required to hold a pressure seal on your housing and made of elastomeric material, it provides the means by which a watertight seal is formed.
O-Ring care guide