five /10 /20 PCS Sealing Ring Silicone Coil Waterproof O Ring Seal for Solar Water Heaters Vacuum Tube Solar Seal Ring Features: lHigh temperature resistance, corrosion resistanceandgood sealingability lMade of excessive qualitymaterial, sturdy and wear-resistant lAs a part of usual maintenance, it can be easily removed and changed Specification: lApplicable Model: for 47 In-line Float Valve lMaterial: Silicone lQuantity(Optional): 5 PCS, 10 PCS, 20 PCS Package Includes: l5xSealing Ring Or l10xSealing Ring Or l20xSealing Ring