Durable and practical to use. Delicate and exquisite, highly matches the equipment. Has higher heat resistance and stretchability, and is easier to install. Solid and durable, long service life. Without this sealing ring, the nozzle of the steam cleaner will cause back spray of steam during use, which may lead to burns. When you notice the sealing ring is aging, replace it promptly. Replacement O-ring set for various steam cleaner accessories, including safety lock, detail nozzle, extension, steam hose, and iron connection. A useful spare part set for uninterrupted operation. Heavy-duty O-rings compatible with KARCHER pressure washers and steam cleaners. Fits behind the nozzle on the lance and high-pressure hose (that screws onto the machine) on all HD and HDS machines. Also fits K2, K3, K4, K5, K6, K7 models. Part Number: 2.640-729.0 Color: As shown Material: Plastic Package Contents: 1 set x O Ring Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm. Only the above package content is included; other items are not part of this sale.