Trident Save A Dive O-ring Kits 
Contain various O-ring pieces in a plastic case 
Great for your tank valve, hp and lp air hoses Works well for cameras, pressure gauges, dive lights. 

Comes in 3 different choices: 
1# Delux 40 Pieces wtih 1/4 oz. container of silicone lube 

2# Delux Viton 40 Pieces wtih 1/4 oz. container of silicone lube 

3# Standard Viton 20 Pieces