Replacement rubber diaphragm washer designed for filling valves and ball valves Key benefits Restores reliable sealing: replaces worn diaphragms to stop leaks and restore proper valve operation. Improves system performance: a correct seal helps prevent continuous running and reduces water waste. Durable material extends service life: made from rubber to resist wear and tear and prolong the life of your plumbing fixtures. What it is Replacement rubber diaphragm washer specifically sized and shaped for filling valves and ball valves used in cistern and inlet valve assemblies. Compatibility and size Compatible with lower and side inlet fill valves and ball valves. Overall diameter: 28 mm for a snug, secure fit in the intended valve types. Material and performance Constructed from durable rubber that resists abrasion and repeated compression. Maintains a tight seal under normal household plumbing conditions to improve valve reliability. Practical use scenarios Toilet cistern repair: swap a worn diaphragm on a lower inlet fill valve to stop a running or slowly refilling toilet. Ball valve maintenance: replace the diaphragm in ball valve assemblies to eliminate leaks and restore full shutoff capability. Routine plumbing service: keep spare washers on hand for quick maintenance in bathrooms, utility rooms, or rental properties to minimize downtime. Why choose this part Correct size and material for common filling valves and ball valves. Straightforward replacement part for routine repairs and preventive maintenance. Notes Designed as a direct replacement diaphragm washer; verify 28 mm diameter fits your specific valve before installation.