

HNBR rubber bladder is composed of rubber pulsation bladder,rubber balance plate and pressure plate bolt, it can reduce the drilling pump pressure fluctuations of instantaneous displacement change;
Make the pump pressure smoothly, protect equipment from damage caused by severe vibration.
the product is also used as stabilizer and vibration absorber for air pump.
Filled with nitrogen in the air or inert gas, in the absence of them,air can replace.But oxygen or combustible gas is forbidden.
Inflation pressure is 20% ~ 30% of the maximum working pressure. The advanced filling pressure is 2.0-2.5 MPa.
Features
2. Wide supply range. We can provide the spare parts for various international and Chinese models.
3. API 7K certificate.
4. Correct quality, competitive prices, fast delivery !
Model | Bottom O/D mm | Upper O/D mm | Upper I/D mm | H mm | Lip Thickness mm |
F1300/1600(KB-75) | 530 | 279 | 240 | 378 | 16 |
3NB-1000/1300(3NB) | 590 | 314 | 280 | 286 | 23 |
F500/800/1000(KB-45) | 445 | 235 | 196 | 332 | 16 |
SL-1300A | 465 | 270 | 240 | 250 | 21 |
600 | 530 | 300 | 260 | 350 | 30 |
KB-25 | 368 | 203 | 162 | 297 | 15 |
350 | 350 | 216 | 190 | 250 | 20 |
BOMCO | F-500 | F-800 | F-1000 | F-1300 | F-1600 | F-1600HL | F-1600L | F-2200HL |
Hong Hua | HHF-500 | HHF-800 | HHF-1300 | HHF-1600 | 3NB-1600F | 5NB-1600 | 5NB-2400 | |
EMSCO | F-500 | F-800 | F-1000 | F-1300 | F-1600 | FD-1000 | FC-2200 | FB-1300 |
Gardner Denver | PAH | P7 | P8/9 | P10/11 | PXL | PX-11 | PZL | PY-FXD |
National | 7-P-50 | 8-P-80 | 9-P-100 | 10-P-130 | 12-P-160 | 14-P-200 | 14-P-220 | N-1000/1300 |
Oilwell | A-850-PT | A-1100-PT | A-1400-PT | A-1700-PT | ||||
TSC | WF-500 | WF-800 | WF-1000 | WF-1300 | WF-1600 | WF-2000 | WF-2200 | |
IDECO | T-500 | T-800 | T-1000 | T-1300 | T-1600 |
Packing and Shipping
Delivery time: Stock or depending on quantity.
Delivery method: By express, truck, train, air, sea.


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Always final inspection before shipment;
3. What can you buy from us?
Drilling rigs, Varco 9sa/11sa top drive pares, mud pump spares, handling tools, CANRlG 1250AC, seal, drawworks spares etc.
4. Why should you buy from us not from other suppliers?
Rosenwell Petro is reputable manufacturer and solution provider to mud pump/drilling pump of oil gas industry. We are focused on consumable parts, aiming for increasing parts life span,reduced operational cost, shorter downtime.
5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,CIP,FCA,CPT,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T, L/C, D/P D/A, Money Gram, Credit Card, PayPal, Western Union, Cash, Escrow;
Language Spoken: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, ltalian