Hydraulic rod PTFE SPNS step seal

Rod seals are static seals installed in glands or housings to prevent the leakage of fluid from within a cylinder to the outside as the rod cycles.

Brand:
JST Seals
Item NO.:
SPNS(STR)
Payment:
T/T
Product Origin:
China
Shipping Port:
Guangzhou
Order(MOQ):
50

Product Detail

Hydraulic rod seal PTFE SPNS step seal

SPNS type hydraulic seals, are also call rod buffer step seals, static seals installed in glands or housings to prevent the leakage of fluid from within a cylinder to the outside as the rod cycles.

SPNS seals can be applied to various applications, especially those occasions where polyurethane seals are not suitable for applications, such as oil in water or emulsion media. PTFE materials have extremely low friction, corrosion resistance and heat resistance compared with other known sealing materials, However, compared with polyurethane and other rubber sealing materials, PTFE is hard and has poor elasticity. In order to make full use of the advantages of PTFE, PTFE must be matched with an expansion ring to supplement elasticity as a seal. At the same time, the PTFE slip ring must be reasonably designed, and the expansion ring must provide sufficient initial sealing force and ensure its static sealing function in the groove.

In order to obtain a good working life, different fillers are added into PTFE. These fillers can greatly improve the deformation resistance of PTFE, increase the wear resistance and reduce the risk of extrusion. Bronze is added to our common PTFE materials.

O-ring is usually used as expansion ring because of its low cost, full size, easy availability and a variety of materials to choose from. It is very important to select the best expansion ring, because the sealing function of the slip ring depends on the expansion ring, which will greatly affect the working life of the seal. We recommend using SPNS seals if low friction is required.

Advantages:

1.Chemical resistance
2. Heat resistance
3. Low friction
4. Has good oil return property
5. Easy installation
6. Longevity

7. High pressure resistance

Working Conditions
Working Pressure	Working Temperature	Working Speed	Working Medium	Material
≤40Mpa	-30℃ to +110℃ -25℃ to +220℃ Depending on material selected	≤4m/s	Hydraulic oil; Gas; Water; etc	PTFE Band: Bronze filled PTFE O Ring: NBR, A70±5 FKM, A75±5

Application Suggestion:

Rod step seal is used for reciprocating motion of the piston rod,especially suitable for heavy equipments,such as construction machinery,pressure equipment, etc. It can achieve the best sealing effect when used with double lip sealing dust ring.

Hydraulic rod seal size chart:

Diameter: φ8.9-φ500mm







PN.	Size	Material
STR	40X55.1X6.3	PTFE+Bronze, NBR
STR	45X60.1X6.3	PTFE+Bronze, NBR
STR	48X63.1X6.3	PTFE+Bronze, NBR
STR	50X65.1X6.3	PTFE+Bronze, NBR
STR	55X70.1X6.3	PTFE+Bronze, NBR
STR	56X71.1X6.3	PTFE+Bronze, NBR
STR	60X75.1X6.3	PTFE+Bronze, NBR
STR	63X78.1X6.3	PTFE+Bronze, NBR
STR	65X80.1X6.3	PTFE+Bronze, NBR
STR	70X85.1X6.3	PTFE+Bronze, NBR
STR	75X90.1X6.3	PTFE+Bronze, NBR
STR	80X95.1X6.3	PTFE+Bronze, NBR
STR	85X100.1X6.3	PTFE+Bronze, NBR
STR	90X105.1X6.3	PTFE+Bronze, NBR
STR	95X110.1X6.3	PTFE+Bronze, NBR
STR	100X115.1X6.3	PTFE+Bronze, NBR
STR	105X120.1X6.3	PTFE+Bronze, NBR
STR	110X125.1X6.3	PTFE+Bronze, NBR
STR	115X130.1X6.3	PTFE+Bronze, NBR
STR	120X135.1X6.3	PTFE+Bronze, NBR
STR	125X140.1X6.3	PTFE+Bronze, NBR
STR	130X145.1X6.3	PTFE+Bronze, NBR
STR	140X155.1X6.3	PTFE+Bronze, NBR
STR	145X160.1X6.3	PTFE+Bronze, NBR
STR	150X165.1X6.3	PTFE+Bronze, NBR
STR	155X170.1X6.3	PTFE+Bronze, NBR
STR	160X175.1X6.3	PTFE+Bronze, NBR
STR	180X195.1X6.3	PTFE+Bronze, NBR
STR	40X55.5X6.3	PTFE+Bronze, NBR
STR	45X60.5X6.3	PTFE+Bronze, NBR
STR	48X63.5X6.3	PTFE+Bronze, NBR
STR	50X65.5X6.3	PTFE+Bronze, NBR
STR	55X70.5X6.3	PTFE+Bronze, NBR
STR	56X71.5X6.3	PTFE+Bronze, NBR
STR	60X75.5X6.3	PTFE+Bronze, NBR
STR	63X78.5X6.3	PTFE+Bronze, NBR
STR	65X80.5X6.3	PTFE+Bronze, NBR
STR	70X85.5X6.3	PTFE+Bronze, NBR
STR	75X90.5X6.3	PTFE+Bronze, NBR
STR	80X95.5X6.3	PTFE+Bronze, NBR
STR	90X105.5X6.3	PTFE+Bronze, NBR
STR	95X110.5X6.3	PTFE+Bronze, NBR
STR	100X115.5X6.3	PTFE+Bronze, NBR
STR	105X120.5X6.3	PTFE+Bronze, NBR
STR	110X125.5X6.3	PTFE+Bronze, NBR
STR	120X135.5X6.3	PTFE+Bronze, NBR
STR	155X170.5X6.3	PTFE+Bronze, NBR
STR	160X175.5X6.3	PTFE+Bronze, NBR

Hot Tags :

rod buffer step seals for hydraulic cylinder Hydraulic rod PTFE seals SPNS step seals installation hydraulic rod seals China SPNS seal catalogue Compression molding PTFE seal

Next:
High performance rod seals for hydrogen application

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.

Subject : Hydraulic rod PTFE SPNS step seal

Categories

New Products

Related Products

PU pneumatic rod seal EU

Easy installation rod seal is external seals that prevent leakage from the cylinder. EU rod seal for piston rods in pneumatic cylinders combines three functions: sealing-wiping-fixing.

Hydraulic D2 piston polyurethane seal

Piston seals are work to seal in fluid, thus preventing the flow of fluid across the piston, allowing pressure to build up on one side of the piston.

Hydraulic PU BS rod seal

BS seal is rod seal for hydraulic cylinders, single-acting, polyurethane u-cup design with secondary sealing lip.

High performance rod seals for hydrogen application

This product can fully meet the pressure working conditions of current hydrogen compressor transportation equipment, ranging from 0 to 90MPa, and the sealing element will not extrude and deform, with good sealing performance.

Downhole pump down plug (PDPC)

Pumpdown plugs separate cement from the displacement fluid during liner cementing operations.

High performance rod seals for hydrogen application

Hydraulic cylinder PTFE wear ring

Wear rings are used to help keep the piston centered, allowing for even wear and pressure distribution on the seals. Wear rings are used in both piston and rod applications.

NBR HNBR FKM PTFE O ring

O ring is a type of seals with solid rubber material or PTFE and an O-shaped cross section.

Hydraulic Seal

Rod Seal

Hydraulic rod PTFE SPNS step seal