Genuine DF-35D Accumulator Diaphragm for Delta F-35 Hydraulic Breaker
The DF-35D Diaphragm (Accumulator Membrane) is a heavy-duty sealing element engineered specifically for the nitrogen gas accumulator in heavy hydraulic breakers, including the Delta F-35 / Furukawa F35 / Kent F35 series attachments.
Equipment Part Grouping
· DF35D-0000: Full Hammer Cylinder Seal Rebuild Kit
· DF35D-0010: Upper Nitrogen Chamber Charging Valve O-Rings
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The DF-35D accumulator diaphragm is molded from high-grade, oil-resistant rubber compound (NBR/HNBR) designed to handle continuous flex cycles and elevated operating temperatures. By isolating high-pressure nitrogen gas from the hydraulic fluid, it ensures efficient energy transfer and protects internal hammer valves and carrier hydraulic pumps from destructive pressure spikes.
The SPARKLING MACHINERY NEW DF-35D Diaphragm Photo:

The SPARKLING Genuine DF-35D Accumulator Diaphragm is a precision replacement component designed for the Delta F-35 hydraulic breaker. It helps maintain accumulator performance by separating the nitrogen chamber from hydraulic oil, supporting efficient energy transfer and stable breaker operation.
--- Product Specifications
- Product Type: Hydraulic breaker accumulator diaphragm
- Compatible Model: Delta F-35
- Application: Hydraulic rock breakers and excavator attachments
- Replacement Position: Accumulator assembly
- Use: Repair, maintenance, and service replacement
--- Key Features and Benefits
- Reliable Compatibility: Designed for the Delta F-35 breaker to support accurate installation and dependable operation.
- Stable Hydraulic Performance: Helps reduce pressure pulsation and maintain consistent impact energy during demanding applications.
- Durable Construction: Manufactured with quality-focused processes to withstand repeated pressure cycles and challenging jobsite conditions.
- Protects Hydraulic Components: Proper diaphragm performance helps prevent direct contact between nitrogen and hydraulic oil, supporting accumulator efficiency and system protection.
- Cost-Effective Maintenance: Replacing a worn diaphragm can help restore breaker performance and reduce unnecessary downtime or complete accumulator replacement.
A damaged or aged accumulator diaphragm may cause weak impact force, unstable breaker operation, oil leakage, or abnormal pressure behavior. Replacing it with a suitable DF-35D diaphragm helps keep the hydraulic breaker operating smoothly and efficiently.
Before ordering, please confirm the breaker model, accumulator specifications, diaphragm dimensions, and part number with your existing component. Professional installation and correct nitrogen charging are recommended. Always follow the hydraulic breaker manufacturer’s service procedures.
--- Why Choose SPARKLING MACHINERY?
Founded in 2013, SPARKLING MACHINERY specializes in high-quality excavator parts and hydraulic components compatible with leading brands such as Caterpillar, Komatsu, Hitachi, and Volvo. We provide strict quality control, technical consultation, customized solutions, competitive pricing, and continuous global support.
Choose SPARKLING for dependable parts and professional service.
FAQ
What step should be taken during installation?
Bleed all nitrogen pressure completely before disassembly. Thoroughly clean the accumulator chamber interior, apply a light film of clean hydraulic oil to the diaphragm lip, and seat it squarely into the retaining groove before torquing cover bolts.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation



🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
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