Part Number 2.640-729.0: Specifically designed for compatibility with for models K2, K4, K5, K6, and K7, ensuring a precise fit. Note: These O-rings do not fit models K1700 to K2000, maintaining focused compatibility for optimal performance. They are engineered to endure the demanding conditions of steam cleaning, effectively maintaining a robust seal that withstands both high pressure and temperature. Precision Fit Design: These O-rings are meticulously designed to align perfectly with original equipment specifications. Their precise compatibility with various steam cleaner nozzles and hoses ensures a tight seal, effectively preventing any potential leaks and enhancing overall equipment efficiency. Easy Installation Process: Featuring increased heat resistance and flexibility, these O-rings facilitate a straightforward installation process. This design advantage allows for quicker and more efficient maintenance or repairs, significantly reducing downtime and effort. Essential Spare Parts Kit: This comprehensive set of 24 O-rings is indispensable for routine maintenance of pressure washers and steam cleaners. Keeping these on hand ensures preparedness for immediate replacement, thereby preventing interruptions and extending the lifespan of your equipment. Color: As Shown Material: plastic Package Contents: 24 x O-Ring Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.