Bonzer Marketeers supplies OEM-compatible AODD pump gasket sets in PTFE, EPDM, Buna-N, FKM and elastomer grades — for Wilden, ARO, Sandpiper, Yamada and 12+ brands. Trusted spare parts supplier serving chemical, pharma, and paint industries across India.
Gaskets are the static sealing components on the wet side of an AODD pump. They sit at every joint where two pump body sections meet — between the manifolds and the fluid chambers, between the fluid chambers and the centre block, and between the centre block and any covers or end plates. Their function is to prevent process fluid from leaking externally at these joints under the pressure and cyclic forces generated by the pump's operation.
Although gaskets are not moving parts, they are still consumable components that require replacement during every scheduled strip-down or service. Each time a pump is opened, gaskets are compressed and deformed. Over multiple service cycles, they take a permanent set, lose their compressibility, and can no longer create a reliable seal when the pump is reassembled. Chemical attack, elevated temperatures, and prolonged exposure to aggressive fluids also degrade gasket material, accelerating the need for replacement.
Fitting a new gasket set at every pump overhaul is a low-cost step that prevents external leaks, maintains suction performance, and avoids costly unplanned shutdowns — particularly important in chemical, pharmaceutical, and paint manufacturing environments where any process fluid leak is a safety, quality, or compliance concern.
Gasket material must be chemically compatible with your process fluid and capable of maintaining its sealing performance at the operating temperature. Bonzer Marketeers supplies gaskets in all standard elastomers and PTFE grades used across major AODD pump brands.
Excellent for sealing around petroleum-based fluids — fuel oils, mineral oils, hydraulic oils, and lubricants. Standard choice for oil & gas, automotive, and machinery applications. Good compression set resistance under typical industrial conditions.
Preferred for water-based fluids, dilute acids, alkalis, and low-temperature services. Low cost and good chemical resistance to aqueous process streams. Widely used in water treatment, food processing, and general chemical applications.
The most chemically inert gasket material available. Handles highly corrosive acids, chlorinated solvents, ketones, and acetates. The preferred choice in pharmaceutical, semiconductor, and aggressive chemical processing applications. FDA-compliant grades available.
Excellent resistance to high temperatures and aggressive chemicals including aromatic hydrocarbons, chlorinated compounds, and concentrated acids. Used in high-temperature process lines and solvent-handling applications where EPDM is not suitable.
Used in acidic and caustic applications as a cost-effective alternative to PTFE. Good abrasion and chemical resistance. Common in paint, coatings, and ceramic slurry pump applications in India.
General-purpose elastomer for non-aggressive fluids, water-based slurries, mild chemicals, and general industrial duties. Good compression set and flex properties. Cost-effective choice where fluid is not chemically demanding.
Understanding gasket positions helps maintenance teams identify which gaskets to replace during partial or full pump overhauls:
Seal the joint between the inlet and discharge manifolds and the outer fluid chambers on each side of the pump. These gaskets experience both fluid pressure and cyclic mechanical loading with every stroke.
Seal the outer fluid chamber to the centre block assembly. The diaphragm outer bead works alongside these gaskets to create the primary fluid containment boundary on the wet side of the pump.
Seal the air chamber sections within the centre block. Failure here can allow process fluid or air to cross between sections, causing irregular cycling or contamination of the air side.
Seal any access covers, end plates, or pilot valve covers on the pump body. These are typically replaced as part of a complete gasket set during full overhaul service.
Proper gasket selection is especially critical in industries where any process fluid leak creates a safety, environmental, or quality concern. Bonzer Marketeers supplies AODD pump gaskets to chemical processing plants, pharmaceutical manufacturers, paint & coatings producers, food & beverage processors, and water treatment facilities across India. We also supply gaskets for AODD pumps in oil & gas, textile dyeing, printing & inks, ceramics & mining, pulp & paper, adhesives, and steel & metal processing — covering every sector where diaphragm pumps are deployed in Indian industrial operations.
We supply gasket parts in the following formats to match your maintenance approach:
All gaskets required for a full pump strip-down in a single matched set. Eliminates the risk of ordering incomplete parts and ensures every sealing joint is renewed in a single service.
Single gaskets for manifolds, chambers, or centre blocks where only a specific joint needs to be replaced or where a partial service is being carried out.
Wet-end kits that include gaskets alongside diaphragms, check balls, seats, and O-rings — all matched to your pump model for a comprehensive wet-side overhaul in one order.
Full pump rebuild kits covering both wet-side and air-side wear parts — including gaskets, diaphragms, check balls, seats, O-rings, and air valve seals — for complete pump restoration in one kit.
Gaskets seal the static joints between the pump body sections — manifolds, fluid chambers, centre block, and covers. They prevent process fluid from leaking externally at these joints under the pressure and mechanical loads generated by the pump's cycling action.
Gaskets should be replaced every time the pump is opened for service — regardless of whether they appear damaged. Each time a gasket is compressed and released, it takes a slight permanent set. After multiple service cycles, it can no longer compress sufficiently to seal reliably when the pump is reassembled. Reusing old gaskets after a strip-down is a common cause of post-service leaks.
PTFE gaskets offer the broadest chemical compatibility and are the default recommendation for pharmaceutical and aggressive chemical applications. For dilute acids and water-based process fluids, EPDM is a cost-effective option. For high-temperature or solvent duties, FKM (Viton) is preferred. Our technical team can help confirm the right material for your specific fluid and temperature conditions.
Yes. Bonzer Marketeers supplies OEM-compatible gasket sets and individual gaskets for Wilden, ARO, Sandpiper, Yamada, Graco, and other leading AODD brands across India, dispatched from our Vadodara, Gujarat base. Share your pump model and size and we'll confirm availability and pricing within one business day.
It is not recommended. Gaskets that have been compressed once take a permanent set and lose their ability to seal reliably when reinstalled. The cost of a new gasket set is far lower than the cost of a post-service fluid leak or a second unplanned strip-down. Always fit a fresh gasket set when reassembling an AODD pump.
A complete gasket set covers all four sealing positions in the pump: manifold-to-chamber gaskets (inlet and discharge sides), chamber-to-centre block gaskets, any internal centre block gaskets, and cover or end plate gaskets. A matched set ensures no joint is missed during reassembly.
If re-torquing does not stop the leak, the gasket has likely reached the end of its compression range and can no longer seal reliably. This is common on gaskets that have been reused across multiple service cycles. Replace the gasket — additional torque beyond the manufacturer's specified value will not restore a spent gasket and may damage the pump body flanges.
Share your pump details — we'll match the exact part you need.
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+91 85111 20764
