I am looking at two of my Surefires and it appears that there is an extra o-ring groove on both ends of the bodies (M3+C3). Is this there for a purpose or is there actually supposed to be 2 o-rings on both ends? If I put the 2nd o-rings in will it be better or cause problems? Both of the SFs I'm looking at were "nearly" new but not 100% NIB so I don't know how they came from the factory.
Why extra (o-ring) groove on Surefires?
- Thread starter cfromc
- Start date
Help Support Candle Power Flashlight Forum
tebore
Flashlight Enthusiast
Well the models that have Seal/Diving counter parts usually just have extra o-rings and beefed up parts. No surprise that some of the bodies would have extra grooves.
GeoffChan
Enlightened
i think its for extra water proofness.
Geoff
Geoff
Size15's
Flashaholic
The Millennium Series comes standard with two o-rings on the TailCap-end of the bodies.
The main purpose of an additional o-ring seal is to allow for the component to be rotated underwater - the 2nd o-ring helps to ensure the seal remains watertight.
Secondary purpose is to help prevent accidental rotation of the component; in storage, transportation, carry & use.
Al
The main purpose of an additional o-ring seal is to allow for the component to be rotated underwater - the 2nd o-ring helps to ensure the seal remains watertight.
Secondary purpose is to help prevent accidental rotation of the component; in storage, transportation, carry & use.
Al
