Fra/Gp Profile PTFE/Teflon Piston Guide Ring Seal/Wear Ring

Model NO.: FRA series Application: Cylinder Performance: Wear Standard: Standard Design Standard: ISO 10766 Max. Compression Resistancelication: 30 to 35 N/mm Suqare Reciprocation Speed: 15m/S Trademark: morgan Origin: China Material: PTFE/Teflon/Phenolic Fabric Type: Shaft Seal Shape: O-Ring Delivery Date: 15 Days PTFE Thermal Application: -250~+260 Celsius Degree Medias: Mineral Hydraulic Oils Fire-Resistant Liquids Bioc Color and Dimension: Accept Customized Products Specification: 8-3200mm HS Code: 4016931000 Description
The FRA Piston profile is a machined Guide Ring with a 30° angle cut as standard, made from filled PTFE. Wear Ring FRA for backing up and guiding hydraulic cylinders, pneumatic cylinders and piston rods. In line with GB/T15242.4 standard. Designed apply please referring to Merkel FRA series standard and Trelleborg's GP series standard.
Advantages
As a non-metallic guide element for pistons, for standardized housings, amongst others, according to ISO 10766
No seizure due to metal/plastic materials combination
Medium load-bearing capacity
Chamfered profile edges prevent pressing of edge into the corner radii of the housing groove
Simple snap-in fitting. Substantial and improved lubrication conditions through the tear structures
Very good friction coefficient; no stick-slip effect
Good wear resistance; very long life
Increased absorption of foreign particles
Good vibration absorption
Technical data

Temperature	-60°C/+200°C
Pressure	*
Speed	15.0 m/s
Medias	Mineral hydraulic oils Fire-resistant liquids Biocompatible fluids Water Others (contact our experts)
Max. compression resistance	30 to 35 N/mm²
Radial loads in dynamic applications	15 N/mm² at 25°C 12 N/mm² at 80°C 8 N/mm² at 120°C

 Applications Aerospace
Earth moving equipment
Industrial vehicles
Agricultural machinery
Cranes.
Military
 Materials Bronze-filled PTFE
Carbon-filled PTFE
Carbon graphite-filled PTFE
Phenolic Fabric (PFC)

Type of material	Service temperature	Characteristics	Contact surface area
Filled PTFE	-60°C / +150°C (+200°C)	Very good friction coefficient Good wear resistance Good extrusion resistance Excellent chemical inertia	Steel, chrome steel, Cast iron

  PFC high strength phenolic fabric has excellent mechanical, physical, and chemical properties.
PFC high-strength phenolic fabric products are widely used in guide ring, bearing ring, sleeve, thrust washer, and bearing, and they are highly praised by users for excellent performance.
   Surface roughness

Roughness	Dynamic surface area	Static surface area	Groove flanks
Ra	0.05 - 0.2 µm	≤ 1.6 µm	≤ 3.2 µm
Rz	0.4 - 1.6 µm	≤ 6.3 µm	≤ 10.0 µm
Rmax	0.63 - 2.5 µm	≤ 10.0 µm	≤ 16.0 µm

  Recommended radius of the groove diameter

Bore diameter ØD1	Radius R1 max
≤ 250.00	0.20
> 250.00	0.40

  DESIGN GUIDELINES  Guide sizing The following formulas calculate the height "H" of the wear ring in the piston or rod seal while taking the gap into account "Z" necessary at the ends of the ring after fitting. This gap "Z" offsets the thermal expansion under the effects of temperature, and prevents intermediate pressures and drag pressures in the system.
H = (F x f) / (ØD1 x Cr)
where:
H = Min. height of guide (mm)
F = Max. radial force (N)
f = Safety coefficient (we recommend 2)
ØD1 = Bore diameter (mm)
Cr = Permissible radial load in dynamic applications (N/mm²)Types of cuts The Wear Rings are made with a 30° angle cut as standard. Other types of cuts can be made on request, as shown in the diagram below.



Morgan Seals has the biggest vulcanizing machine(4000T) and different kinds of seal moulds. So for the non standard Oil Seals, please do not hesitate to contact with us. The following is the the picture of our production line and warehouse:

Our services:
Guangzhou Morgan Seals Co., Ltd the expert in sealing solution field who combines the rich seals research and production experience of her parent firm with the advanced technology and administration of Morgan, Worcester. Morgan Seals Research and Development ability is based on her parent firm who has won awards as scientific research achievements for more than 1000 projects and over 200 of them won scientific and technological progress prizes of municipal, provincial, ministerial and national levels. At the same time, it also has one National Certified Laboratory, one National Engineering Research Centers and three Industry Level Inspection Centers.



 

Contact us if you need more details on Wear Ring. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Guide Ring、Piston Guide Ring. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Wear Ring/Guide Rings