Viton® O-Rings (Brown) Viton® is a registered trademark of DuPont Dow Elastomers. Buna-N O-Rings (Black) Reef Scuba Deluxe O-Ring Kits Select our "Deluxe O-Ring Kit" (Click Here to See on Page 2 ) in a durable double-sided waterproof marine case supplied with 10 each of  the five most commonly used o-rings, grease, and o-ring pick. We even give more extra compartments for additional o-rings that you might want to add. Now, additionally, you can build your own O-Ring Kit. Mix and match with any o-rings you want--Buna or Viton. You can start Building Your Own O-Ring Kit now...(Click Here)

Information You Need to Know
           about O-Rings                  
 

Buna or Nitrile series is the most economical type usually found in hydraulic and plumbing shops. Salt water, UV, oxygen and ozone can attack nitrile causing them to fail. Viton® or FKM series is far superior than Buna and will standup better against elements that attack Buna. Durameter 90 versus 70 Durameter:  The higher the number the harder of the material. Softer   Harder Durameter is the unit of measure used by 3 different scales--the Shore A Scale is used to measure the hardness of elastomers, rubber like materials and plastomer materials like polyurethane. There is also the D Shore and the 00 Shore which gives information pertaining  to the type of material, etc. 90 Durameter can take more pressure than 70 Durameter. High Pressure and Tank Necks use 90 Durameter and Low Pressure uses 70 Durameter.