Specifications

1.Specifications:from 3-1/2" to 13-3/8";
2. Material: NBR;
3.Rubber Tensile strength:23Mpa

 

 

 

 

 

1.Material: rubber material is Buna-N rubber, polyurethane material.                                                                  

 

2.Application Environment: Buna-N rubber is used for well cementation when the temperature of down hole is lower than 120 centigrade. Although Polyurethane material has higher-temperature resistance than Buna-N rubber, Buna-N rubber has better flexibility and wear-resistance than Polyurethane. Thus, Buna-N rubber is adopted in big oil fields.                                                                       

 

3.Product features: The bore diameter meets professional standard and has no influence on pump pressure. The drillable aluminum alloy is  adopted in internal firmware which mechanical capacity is much better than plastics or glass fiber reinforced plastics. It reduces drilling time and provides the cement plug enough braced force while cement plug is descending in casing.

 

4.technical parameters:

Specifications	Nominal Diameter (mm)	Weight (kg)	Height (mm)	Sealing Pressure(Mpa)	Penetration Pressure(Mpa)	Material
3-1/2"	88.9	1	200	20	1.5	NBR
4-1/2"	114.3	1.8	200	20	1.5	NBR
5"	127	2	200	20	1.5	NBR
5-1/2"	139.7	2	210	20	1.5	NBR
6-5/8"	168.275	4	230	20	1.5	NBR
7"	177.8	5	220	20	1.5	NBR
8-5/8"	219	7	250	20	1.5	NBR
9-5/8"	244.5	10	250	20	1.5	NBR
10-3/4"	273	16	250	18	1.5	NBR
13-3/8"	339.7	33	360	15	1.5	NBR
Notes:Product size parameters can be customized according to customer needs.

 

 

Material  Properties Table;

Shore       Hardness	Ageing coefficient	Volume           Expansion Ration		Elonggation	Rubber Tensile     strength	Applicable Temperature     (Centigrade)
75	0.9	2%		360%	23Mpa	from -30 to 80