Oil and gas seal
Products
Home Products

Oil & Gas Seal

Downhole Seal

Seal Stack

Seal stack for well tools sliding sleeve

Seal stack for well tools sliding sleeve

A seal assembly for use in a wellbore tool, it acts as a flow restrictor protecting a lower end of the seal assembly from high pressure and/or high volume flow.

  • Brand:

    JST Seals
  • Item NO.:

    ESY
  • Payment:

    T/T
  • Product Origin:

    China
  • Shipping Port:

    Guangzhou
  • Order(MOQ):

    50
  • Product Detail

Seal stack for well tools sliding sleeve


In many well completion operations, it frequently occurs that it is desirable, either during the completion, production, or workover stages of the life of the well, to have fluid communication between the annular area between the interior of the casing and the exterior of the production tubing or workstring with the interior of such production tubing.


A seal assembly for use in a wellbore tool, it acts as a flow restrictor protecting a lower end of the seal assembly from high pressure and/or high volume flow.


In such well tools, a series of upper and lower primary seals are placed in the housing for dynamic sealing engagement relative to the exterior of a sleeve which passes across the seals during opening and closing of the port element. As with the seal stack, such primary sealing means also represent an area of possible loss of sealing integrity.


Application:

1. FLS and FLS-R Gate Valves

2. Well tools like sliding sleeves that can be used for infinitely adjustable switches

2. Bi-directional pressure bearing piston or rod seal



Features:

1. High temperature and high pressure resistance

2. Bidirectional alternating pressure bearing

3. Reciprocating seal

4. High reliability - verification of over 2400 reciprocating tests

5. JST patented seal design


Technical Parameter

Temperature range

Pressure

Medium

Material

Compliant with standard

4℃~177℃

≤15000psi

water, oil, natural gas, fracturing fluid, H2S

PC005/PC002/PC007/PEEK/HNBR/FKM

API 19LH V1 standard


Existing Standard Grooves:

G=4.76  L=45.5

G=6.35  L=38(50.8)

G=7.94  L=42.6

Send A Message

If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Related Products
PTFE PEEK chevron seal stack
V-Stack Seal Assembly for oil & gas

V-Packings are used in various Oilfield Downhole equipment such as various Valves etc. V-Packings are extremely suitable for usage in medium to heavy duty applications. Vee Packings accept low and high pressure while operating in the most extreme conditions and also if there exists any misalignment between the sealing gaps.

peek chevron seal stacks
PEEK V stacks for downhole tool

The V Stack seal assembly is comprising a top adapter or anti-extrusion ring (1), Vee Rings (2) and a bottom adapter (3). In the assembly the energizing axial force is transferred between the individual packing rings so that each ring is pressed into positive contact with the mating hardware surface. Special material grades are available for a large variety of working conditions. The chevron seal stack material could be PEEK, modified PTFE and spring.

rod T-seal
Rod T-Seal Compact Seal

T-Seal is a compact three-piece double acting seal composed of a T shaped elastomeric element and two rigid anti-extrusion rings. These compact sealing elements are designed for installation in simple O-ring grooves and are often used to modify faulty O-rings.

Phenolic wear ring catalogue
WR phenolic resin wear ring

Phenolic wear rings are designed with tubing made from fine weave cotton fabric wound on molds and imbued with phenolic resin. It has high mechanical properties, good oil resistance, low water absorption and high wear resistance.

API 6D ball valve seal
Bidirectional high-pressure ball valve seat seal

Bidirectional high-pressure ball valve seat seal is a type of seat sealing that can withstand bidirectional pressure, with good low-temperature performance and airtightness, and is widely used in 6D ball valves.

FFKM O Rings and Seals
Perfluoroelastomer FFKM O rings and seals manufacturer in China

This is sealing product developed by JST to meet the increasingly demanding sealing needs of equipment manufacturers and users in semiconductor, petrochemical, mechanical seal, instrumentation, energy, biopharmaceutical, food and medical industries.

valve stem seal
ESY Series Fugitive Emission Ball Valve Stem Seal

JST ESY series design is commonly used as dynamic seal for ball valve stem, and the ESY with various V rings and T shape support rings could be used for fugitive emission valves, meeting the requirements of ISO-15848.

JST PTFE wiper seals size
Hydraulic PTFE wiper seal

Wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system.

© Copyright: 2025 Guangzhou JST Seals Technology Co., Ltd. All Rights Reserved.

粤ICP备12032262号 IPv6 network supported

IPv6 network supported

Friendly Links:

Voneseals
top

Send A Message

Send A Message

    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

  • #
  • #
  • #