A robust rubber bellows seal, with a wide, larger than DIN, cross section, for optimum flexibility and durability. Type 19L is supplied as standard, with a Type 8 DIN LONG ‘O’- Ring mounted stationary with an anti-rotation provision, to suit DIN housing dimensions. The robust heavy duty bellows design Type 19L is a highly proficient design commonly utilised in heavy duty applications, such as abrasive applications, including waste-water.