U-ring seal Type US

staticNBREPDM

Product description
The US bonded seal consists of a metallic ring with a molded, trapezoidal elastomer seal without a centring embossment. When the screw is tightened, the elastic sealing lip is pressed between two flat faces. Elastomer compression is limited by the strength of the metal ring and the sealing effect increases under system pressure. Standard elastomers available: NBR, EPDM, FKM. Metal options: standard steel (1.0330 galvanized) and stainless steel (1.4301).

Fields of application

• static
• dynamic
• single acting
• double acting
• linear
• rotating
• oscillating

Main use
Sealant for connection elements (sealing at screw or bolt joints, countersunk connections)

Materials
Elastomers (NBR, FKM, EPDM); metal ring (standard steel 1.0330 galvanized, stainless steel 1.4301)

Technical values

• Materials (options): NBR, FKM, EPDM
• Pressure (general): up to 100 MPa (installed into a countersink); up to 40 MPa (installed into a countersink at < Ø40 mm); up to 25 MPa (installed into a countersink at > Ø40 mm)
• Temperature (material dependent): NBR: -30°C / +80°C; FKM: -20°C / +200°C; EPDM: -40°C / +130°C
• Speed: not applicable

Notes
Maximum values for temperature, speed and pressure cannot be applied simultaneously. Actual limits depend on elastomer type, metal choice and the operating media.

Technical specifications

• Model: U-ring Type US
• Main use: Sealant for connection elements
• Seal design: metallic ring with molded trapezoidal elastomer seal without centring embossment
• Materials: Elastomers (NBR, FKM, EPDM); Metal ring: standard steel (1.0330 galvanized) or stainless steel (1.4301)
• Pressure ratings: up to 100 MPa (installed into a countersink); up to 40 MPa (< Ø40 mm); up to 25 MPa (> Ø40 mm)
• Temperature ranges: NBR -30°C / +80°C; FKM -20°C / +200°C; EPDM -40°C / +130°C
• Fields of application: static, dynamic, single acting, double acting, linear, rotating, oscillating
• Important: Maximum values for temperature, speed and pressure are not simultaneously applicable; values depend on material and media