Item Type: Air Pump Piston Ring Material: ABS Uses: Air Compressor Accessories Scope of Application: Oil-Free Cylinder, Air Pump, Air Compressor Applicable Model: 550W / 1100W / 1500W / 1600W 550W: Approx. 68 x 48 x 1 mm / 2.7 x 1.9 x 0.04in 1100W: Approx. 68 x 48 x 1 mm / 2.7 x 1.9 x 0.04in 1500W: Approx. 74 x 56 x 1.0mm / 3 x 2.2 x 0.04in 1600W: Approx. 74 x 50 x 1.0mm / 3 x 2 x 0.04in1Production, high temperature and anti fatigue of this piston ring. Not easy to wear during use, long service life 2Emptive, low noise, convenient installation. Suitable for oil-free cylinders, air pumps, air compressors 3The installation is simple and fast, does not require complicated operations, improve performance. 4Perfect replacement for broken or old piston rings and has a long service life 5Applicable to 550W / 1100W / 1500W / 1600W model for air compressor parts 1 x Air Pump PistonRing