Note: Gaskets 3" and below are unflanged, 4" and larger sizes are flanged. These gaskets are intended for use with nominally sized pipe ferrules (Schedule 5 and Schedule 10). If you are looking for traditional Tri-Clamp® Tube OD ferrule gaskets we have unflanged as well as flanged versions available.

Buna Tri-Clamp® Gaskets are specified by many process equipment manufacturers and are generally suitable for these applications, however service life must be considered and a preventative maintenance program must be in place to mitigate degradation. Buna Gaskets have excellent resistance to petroleum based fluids, making them the economical choice for seals in engines and equipment where petroleum based oils, lubricants, and fuels are present. Chemically, Buna is resistant to many hydrocarbons, fats, oils, greases, hydraulic fluids, and chemicals. Never use Buna Tri-Clamp® Gaskets for Ozone (except PVC blends), ketones, esters, aldehydes, chlorinated hydrocarbons, or nitro hydrocarbons.

Storing Buna Gaskets:

• Shelf Life: 10 Years from cure date
• Store in original packaging in clean and dry warehouse
• Do not expose to direct sunlight
• Keep more than 6' away from electric motors
• Maintain temperature between 65°F and 85°F

• FDA CFR 21, 177.2600
• USDA Hazard Analysis and Critical Control Points
• USDA and 3-A Sanitary Standards
• ASME-BPE Standards for Type I and Type II
• Current Good Manufacturing Practices (CGMP)

• Color Code: one red dot •
• -20°F to 250°F Temperature Range
• Not recommended for strong acids and ozone