M-ring seal Type MA

elastomerNBRPTFE

Product description
The M-ring Type MA is an axial static sealing element designed for stainless steel fittings according to DIN 11851, intended primarily for the food industry. It is suitable for dairy pipe screw joints and is supplied in common elastomer compounds and PTFE.

Regulatory / compliance
Compounds comply with the Code of Federal Regulations (FDA) 21 CFR 177.2600 or 21 CFR 177.1550. Further compounds are available on request, for example to meet BfR recommendation XXI, USP Class VI and 3-A Sanitary Standards.

Fields of application

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

Main use
valves and fittings for the food and beverage industry

Materials
elastomers and PTFE. Typical elastomer options: NBR, FKM, EPDM; PTFE available for specific applications.

Technical values

• Materials (available variants): PTFE, NBR, FKM, EPDM
• Pressure: up to 16 MPa (material dependent)
• Temperature ranges (material dependent): PTFE: -200°C / +260°C; NBR: -30°C / +80°C; FKM: -20°C / +200°C; EPDM: -40°C / +130°C
• Speed: not specified (–)

Notes
Maximum values for temperature, speed and pressure are not simultaneously applicable. Actual limits depend on the selected material and the process media.

Technical specifications

• Designation: M-ring Type MA
• Function: axial static sealing element for stainless steel fittings (DIN 11851)
• Typical applications: valves and fittings in the food and beverage industry
• Available materials: PTFE, NBR, FKM, EPDM
• Pressure rating: up to 16 MPa (depending on material)
• Temperature ranges (material dependent): PTFE: -200°C to +260°C; NBR: -30°C to +80°C; FKM: -20°C to +200°C; EPDM: -40°C to +130°C
• Regulatory compliance: FDA (21 CFR 177.2600 / 21 CFR 177.1550); further options available: BfR recommendation XXI, USP Class VI, 3-A Sanitary Standards