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High Pressure NBR Pump Piston Assembly

High Pressure NBR Pump Piston Assembly

    Payment Type: T/T
    Terms of Trade: FOB,CFR,CIF,EXW,FCA,CPT,CIP
    Delivery Time: 15 Days
    Transportation: Ocean,Land,Air
    Port: Tianjin

Basic Info

Model No.: PISTON

Product Description


Piston rubber cup for mud pump is a kind of rubber cup. Used for mud pump piston, reciprocating motion seal in mud and crude oil medium.

There are two kinds of packaged piston cup and integral piston. The former is made of oil-resistant rubber lip and nylon root, and is made of NBR and PU. The working pressure is 19.6 MPa and the working temperature is - 20 ~+80 C.



Piston assembly


Piston and cylinder liner (some without cylinder liner and directly with the inner wall of the liquid cylinder) ,sealing elements are assembled on the piston assembly. The reciprocating motion of the piston alternately changes the volume of the working chamber and realizes the process of pumping, sucking and discharging by means of the pump valve. Therefore, piston must have: (1) good sealability; (2) sufficient strength and stiffness; (3) the connection between positioning of piston body and piston rod, piston ring should be firm and reliable.



Piston assembly is one of the main parts of the hydraulic end system of mud pump, and also one of the vulnerable parts in drilling work. The discharge pressure of mud pump is generated by reciprocating linear movement of piston assembly in piston. The piston assembly is composed of piston core, rubber sheet, clamp spring, pressure plate, etc. The material of piston core is 42CrMo, and the material of piston rubber is nitrile rubber or polyurethane rubber.


NBR Pump Piston Assembly


NBR Pump Piston Assembly


Material classification:
Nitrile Butadiene Rubber (NBR) : It is suitable for ordinary drilling environment with working pressure below 20 Mpa and working temperature not higher than 120 C. It has excellent wear resistance, chemical corrosion resistance and long service life in common drilling environment.

Polyurethane rubber: It has excellent oil resistance and wear resistance. The working temperature is not higher than 120 C. It is suitable for oil-based mud with working pressure below 35Mpa and working environment with high sediment content.

Hydrogenated nitrile butadiene rubber(HNBR) : suitable for high temperature, high pressure, high corrosion working environment, working pressure 75 Mpa, working temperature up to 150 C. Hydrogenated nitrile-butadiene rubber is a kind of rubber used in aviation. Hydrogenated nitrile-butadiene rubber (HNBR) is used in petroleum industry. It has good abrasion resistance, oil resistance and chemical resistance. It has good amine resistance and steam resistance. Especially in the high temperature and high pressure working environment, other rubber destroyed quickly under the action of hydrogen sulfide, carbon dioxide, methane, steam and acid, but hydrogenated nitrile-butadiene rubber showed good comprehensive properties.


NBR Pump Piston


NBR Pump Piston



We, Hebei Baoshi Special Flexible Rubber Chemical Industry Co., LTD, specialize in the field for more than 10 years, with the strength of RTP pipe, rubber hose, orging-casting integrally-formed union drilling hoses, high-pressure double-hook self-locking flame retardant hoses, oil/water self-inflatable packers (the above products are patent products), hydraulic expandable packers, wire spirally-wound hoses, high and low pressure wire braided hoses, flexible reinforced composite pipes, metal hoses, suction and discharge clay hoses, ripple compensators, high and low pressure unions, joints, packer rubber, seals, etc.


NBR Pump Piston Cup



NBR Pump Piston Cup

HEBEI BAOSHI SPECIAL FLEXIBLE RUBBER CHEMICAL INDUSTRY CO., LTD.

 Hebei Baoshi Special Flexible Rubber Chemical Industry Co., Ltd., a technology-innovation enterprise with a great capacity for designing and developing, manufacturing, marketing, and providing technical service, is specialized in producing various pipelines and fitting parts for petroleum, petrifaction, metallurgy, machines, coal, and dredging engineering. Advanced technology, strict management and perfect service have formed the basis of our enterprise. Since it was set up, our company has been managed strictly according to the demands of ISO9001:2008 and API Q1 quality management system of American Petroleum Institute, and has passed the certifications of ISO14001 environmental control system and OHSAS 18001 vocational health control system. Our company has a professional team in charge of designing, researching and developing. During the course of the development, always taking science and technology as the lead and taking the road of innovation, it has established cooperation with China Oil Prospecting Developmental Research Institute, Beijing University, Tianjin University. And it has signed the strategic cooperation agreement with the equipment department of China Oil Prospecting Developmental Research Institute. With our advantages ,we have successively developed new products demanded by the market. We also predict the needs of the market ,by thinking what our customers think about and being eager to meet our cuatomers need.Based on the domestic market and having the international market in view,we will strive for our further development . Main products :meet-water/oil expanding packer ,union-joint forged integral-type high-pressure drilling rubber hose,double-hook self-locking flame-retardant hose,steel wire spiral rubber hose,high/low pressure steel wire braided rubber hose,metal hose,mud draining and sucking hose,flexible reinforced compound hose,packer rubber barrel ,corrugated compensators, high/low pressure union and joint; Our company also produces correlated fitting products,various fitting parts,rubber products,polyurethane products,products of silicon and fluorine rubber,Besides our products of state standard, trade standard,and enterprise standard,we can also produce international standard products of API,SAE,DIN to meet various demands of different customers .With our sincerity and honesty ,we will try our best to supply our customers with best products and service.

Company Info

  • Company Name: HEBEI BAOSHI SPECIAL FLEXIBLE RUBBER CHEMICAL INDUSTRY CO., LTD.
  • Representative: Wangyuesheng
  • Product/Service: Rubber Hose , RTP Pipe , Parkers , Seal Products , Joint , Mud Pump Piston
  • Capital (Million US $): 26,000,000
  • Year Established: 2006
  • Total Annual Sales Volume (Million US $): US$10 Million - US$50 Million
  • Export Percentage: 11% - 20%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: 6
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 10,000-30,000 square meters
  • Factory Location: 103 str. Zhengguzhuang, Jingxian Town, Province Hebei, China
  • Contact Person: Ms. Jane
  • Tel: 86-010-65856090
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