Pharma & Food

PTFE envelope gasket [TFM™ 1600]
Profile ED01
Material code: WS 7110/1.4571 [PW-I]

This envelope gasket with internal diffusion barrier combines the outstanding material properties of PTFE with the excellent leakage rate of the corrugated stainless steel ring. Leak-tightness is achieved even at a low surface pressure, since the diffusion barrier is injected first. The benefit of this is the extremely low leakage rates at high operating parameters of -268 °C to 250 °C [up to 300 °C for brief periods] and max. 80 bar.

SIGRAFLEX® MF gasket
Profile: FD30
Material code: WS 3870

High-performance gasket made of three-component material. A real alternative to filled PTFE flat gaskets. The gasket carrier with perforated metal insert is covered on both sides with a thin stainless steel foil and additionally coated with PTFE. Thanks to this combination, the gasket achieves extremely good tightness values even at low surface pressures. The inner and outer eyelets surround the graph-ite and prevent product contamination. Frequent re-tightening of the flange connection, as is usually the case with filled PTFE gaskets, is no longer needed. The gasket is designed and approved for the demanding requirements in the pharma and food industries. Operational parameters range from -200 °C to 200 °C and max. 160 bar.

TFM™ 1600 gasket
Profile: FD30
Material code: WS 7110

PTFE gasket made of modified, cold flow-reduced Dyneon™ TFM™ 1600 without fillers, with inner and outer eyelets. The double eyelet surrounds the TFM™ and prevents the material from settling or flowing in the tongue and groove area. The application limits range from -200 °C to 200 °C and max. 40 bar.

PTFE envelope gasket [TFM™ 1600]
Profile: ED10
Material code: WS 7110/3822 I WS 7110/3825 I WS 7110/7550

This envelope gasket combines the excellent material properties of PTFE with the adaptability of a non-metallic gasket. Particularly suitable for use in enamel flanges. Insert available in aramid fiber, graphite [SIGRAFLEX® EMAIL] or PTFE [UNIFLUOR®]. The demanding requirements of FDA and EC1935/2004 [EU10/2011] are reliably fulfilled, especially in combination with UNIFLUOR®.

Application parameters WS 7110/3822 from -50 °C to 150 °C [up to 200 °C for brief periods] and max. 40 bar, WS 7110/3825 from -200 °C to 200 °C [up to 230 °C for brief periods] and max. 40 bar, WS 7110/7550 from -200 °C to 150 °C [up to 230 °C for brief periods] and max. 40 bar.

PTFE envelope gasket [TFM™ 1600]
Profile: ED30
Material code: WS 7110/1.4571/3822 I WS 7110/1.4571/3825 I WS 7110/1.4571/7550

This envelope gasket combines the excellent material properties of PTFE with the adaptability of a non-metallic gasket. The corrugated ring insert improves the balancing capacity and the surface pres-sure during assembly and increases the blow-out resistance. Particularly suitable for use in enamel flanges. Non-metallic insert available in aramid fiber, graphite [SIGRAFLEX® EMAIL] or PTFE [UNIFLUOR®]. Corrugated ring made of 1.4571. The demanding requirements of FDA and EC1935/2004 [EU10/2011] are reliably fulfilled, especially in combination with UNIFLUOR®.

Application parameters WS 7110/1.4571/3822 from -50 °C to 150 °C [up to 200 °C for brief periods] and max. 40 bar, WS 7110/1.4571/3825 from -200 °C to 200 °C [up to 230 °C for brief periods] and max. 40 bar, WS 7110/1.4571/7550 from -200 °C to 150 °C [up to 230 °C for brief periods] and max. 40 bar.

Explosive atmospheres can occur in many industrial areas. Especially, however, where flammable liquids or fine granular combustible bulk materials are used. Proper grounding techniques are essential to prevent electrostatic charging. Regulations and recommendations for the avoidance of dangerous electrostatic potentials and for safe discharge can be found in DIN EN IEC 60079 and the Technical Regulations for Hazardous Substances: TRGS 727. However, grounding in pipelines can be impaired by insulating components such as gaskets and seals or lubricants. Our envelope gaskets for electrostatic discharge are designed for safe grounding of high-energy electrostatic potentials. They minimize the risk of ignition hazards caused by uncontrolled discharges.