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GSF Glyd Ring Brown/High Pressure PTFE NBR FKM Piston Seal/180X159X8.1
- Category: Hydraulic Piston Seal / GSF Bore Glyd Ring
- Temperature: -35℃ ~ +120℃ (NBR O-ring); -20℃ ~ +200℃ (FKM O-ring)
- Material: Filled PTFE + NBR / FKM O-ring
- Hardness: PTFE ring 90 Shore D; O-ring 70~90 Shore A
- Working Pressure: 0 ~ 60 MPa
- Color: Brown / Black
- Description: GSF bore Glyd Ring is a double-acting piston seal composed of filled PTFE slip ring and elastic rubber O-ring. It features high pressure resistance, low friction, no stick-slip, excellent wear and extrusion resistance. Suitable for reciprocating sealing of hydraulic cylinders, widely used in construction machinery, injection molding machines, machine tools and heavy-duty hydraulic equipment.
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1. Basic Overview
GSF Bore Glyd Ring is a double-acting high-pressure piston seal. It is assembled with filled PTFE square wear ring and rubber O-ring, specially used for reciprocating motion of hydraulic cylinder piston. It owns the advantages of high pressure resistance, low friction and no crawling.
2. Standard Information
- Full Name: Glyd Ring
- Model: GSF
- Structure: Filled PTFE square ring + rubber O-ring
- Executive Standard: ISO 7425/1, GB/T 1542.1-94, GB/T 15242.3-94
- Alias: Glyd Ring, Square Ring, Piston Double-acting Seal
3. Technical Parameters
- Working Pressure: 0～60 MPa
- Temperature Range: NBR O-ring: -35℃ ~ +120℃; FKM O-ring: -20℃ ~ +200℃
- Linear Speed: ≤ 5 m/s
- Hardness: PTFE ring 90 Shore D; O-ring 70~90 Shore A
- Color: PTFE ring brown / black; O-ring black / brown
- Applicable Media: Hydraulic oil, engine oil, water, emulsion, fuel oil, organic acid and aliphatic hydrocarbon, etc.
4. Material Combination
- Seal Ring: Filled PTFE (adding copper powder / glass fiber / carbon powder, wear-resistant and anti-extrusion)
- O-Ring Options:
- NBR: Oil resistant, general purpose, cost-effective
- FKM/Viton: High temperature and chemical resistant, for harsh working conditions
- PU: Super wear-resistant, impact resistant, for heavy load occasions
5. Product Features
- Double-acting sealing, applicable for double-acting hydraulic cylinders.
- Ultra-low friction coefficient, no stick-slip effect, smooth and precise movement.
- Excellent high pressure and anti-extrusion performance, suitable for heavy-duty equipment.
- Allow larger assembly clearance, reduce processing difficulty and cost.
- Good wear resistance and elastic compensation, long service life and low maintenance.
- Simple single-groove installation, suitable for integral piston.
6. Application Industry
Widely used in injection molding machines, construction machinery, agricultural machinery, forging presses, steel rolling mills, machine tools and servo hydraulic cylinders. It is the ideal reciprocating seal for high-pressure and heavy-duty working conditions.
7. Installation Tips
- Equip with wear ring to avoid metal collision and protect the seal.
- Split groove is recommended for bore diameter below 40mm.
- Clean the groove thoroughly before installation, lubricate with hydraulic oil, and avoid sharp tools scratching the PTFE ring.
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