SCS, INC. DFL111: Multi Directional seal "Quad Ring" for light to heavy duty hydraulic and pneumatic applications. Machined as an actual 4-sided sealing ring unlike older 3 sided versions of this seal. outstanding for replacing O-rings in high pressure, rotary and compact applications. Extremely adaptive possibilities for diverse temperatures and media with a wide selection of seal materials. The snap in design is an outstanding choice for large rod diameters. Extremely adaptive possibilities for diverse temperatures and media with a wide selection of seal materials. Available in standard, metric and custom sizes from 0-200" in diameter. Available in all elastomeric material for high pressure, high temperature and or sealing fluid compatibility.