Thaimart SEALTHAI
End Cover (EC)
EC Radial Rotary Seal (Shaft End Plugs)
Product Description
End Cover model EC is a premium quality shaft end cap designed for gearboxes, reducers, and power transmission systems in industrial machinery. It replaces conventional end flanges or metal cased covers. Reinforced with an internal steel core vulcanized to an oil-resistant elastomer outer diameter, it provides an airtight, oil-tight seal to prevent lubricant and grease leakage.
Key Merits & Features
- Primary function is positive end-sealing to prevent oil and grease leakage from shaft housing bores.
- Excludes external dust, dirt, mud, and moisture from contaminating internal bearings and gears.
- Broad application spectrum: automotive transmissions, gear reducers, industrial machinery, and electrical drives.
- High temperature and high pressure resistance with superior elasticity.
- Rubber-covered outer diameter provides snug press-fit without scratching housing bores.
Technical Parameters
TEMPERATURE: -30°C to +200°C (NBR: -30°C ~ +120°C / FKM: -20°C ~ +200°C)
PRESSURE: High Pressure Resistance
SPEED: 0 m/s (Static End Cover for shaft termination)
Medium (Applicable Media)
Gear oils, lubricating oils, and industrial grease
Installation & Replacement Instructions
If the end cover seal is damaged, cracked, or hardened, replace promptly to avoid lubricant loss.
Replacement Procedure: Carefully remove the outer retainers. Use a flat-blade tool to gently pry the old end cover straight out of the housing bore without damaging the bore wall. Clean the bore thoroughly, then press the new End Cover squarely and evenly into place.
Material Comparison
NBR (Nitrile Rubber, 80 Shore A)
✓ Pros: Excellent resistance to gear oils, lubricants, and grease. High wear resistance. Temperature range -30°C to +120°C. 80 Shore A hardness provides tight press-fit. Economical and reliable.
⚠ Cons: Not resistant to glycol brake fluids or strong polar solvents. Max continuous temperature 120°C.
FKM (Viton, 80 Shore A)
✓ Pros: Withstands continuous high heat up to +200°C. Outstanding resistance to synthetic lubricants, acids, and aggressive chemicals. Long service life in severe operating conditions.
⚠ Cons: Higher cost than NBR. Recommended for high-temperature and harsh chemical environments.
sealthai.com
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Size Data for End Cover (EC) (OD × THK) Outside Diameter x Thickness
Total 107 sizes
EC
OD8xTHK4 mm 8x4 8-4 8*4 8 4 OD 8 THK 4
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EC
OD10xTHK4 mm 10x4 10-4 10*4 10 4 OD 10 THK 4
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EC
OD11xTHK7 mm 11x7 11-7 11*7 11 7 OD 11 THK 7
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EC
OD12xTHK4 mm 12x4 12-4 12*4 12 4 OD 12 THK 4
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EC
OD14xTHK4 mm 14x4 14-4 14*4 14 4 OD 14 THK 4
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EC
OD15xTHK4 mm 15x4 15-4 15*4 15 4 OD 15 THK 4
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EC
OD16xTHK4 mm 16x4 16-4 16*4 16 4 OD 16 THK 4
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EC
OD16xTHK5 mm 16x5 16-5 16*5 16 5 OD 16 THK 5
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EC
OD20xTHK4 mm 20x4 20-4 20*4 20 4 OD 20 THK 4
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EC
OD20xTHK7 mm 20x7 20-7 20*7 20 7 OD 20 THK 7
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EC
OD22xTHK4 mm 22x4 22-4 22*4 22 4 OD 22 THK 4
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EC
OD22xTHK5 mm 22x5 22-5 22*5 22 5 OD 22 THK 5
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EC
OD22xTHK7 mm 22x7 22-7 22*7 22 7 OD 22 THK 7
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EC
OD24xTHK5 mm 24x5 24-5 24*5 24 5 OD 24 THK 5
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EC
OD24xTHK7 mm 24x7 24-7 24*7 24 7 OD 24 THK 7
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EC
OD25xTHK7 mm 25x7 25-7 25*7 25 7 OD 25 THK 7
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EC
OD26xTHK6 mm 26x6 26-6 26*6 26 6 OD 26 THK 6
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EC
OD26xTHK7 mm 26x7 26-7 26*7 26 7 OD 26 THK 7
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EC
OD27xTHK5 mm 27x5 27-5 27*5 27 5 OD 27 THK 5
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EC
OD28xTHK5 mm 28x5 28-5 28*5 28 5 OD 28 THK 5
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EC
OD28xTHK7 mm 28x7 28-7 28*7 28 7 OD 28 THK 7
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EC
OD30xTHK5 mm 30x5 30-5 30*5 30 5 OD 30 THK 5
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EC
OD30xTHK6 mm 30x6 30-6 30*6 30 6 OD 30 THK 6
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EC
OD30xTHK7 mm 30x7 30-7 30*7 30 7 OD 30 THK 7
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EC
OD30xTHK8 mm 30x8 30-8 30*8 30 8 OD 30 THK 8
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EC
OD31xTHK7 mm 31x7 31-7 31*7 31 7 OD 31 THK 7
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EC
OD32xTHK5 mm 32x5 32-5 32*5 32 5 OD 32 THK 5
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EC
OD32xTHK7 mm 32x7 32-7 32*7 32 7 OD 32 THK 7
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EC
OD35xTHK5 mm 35x5 35-5 35*5 35 5 OD 35 THK 5
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EC
OD35xTHK7 mm 35x7 35-7 35*7 35 7 OD 35 THK 7
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EC
OD35xTHK8 mm 35x8 35-8 35*8 35 8 OD 35 THK 8
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EC
OD37xTHK5 mm 37x5 37-5 37*5 37 5 OD 37 THK 5
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EC
OD37xTHK7 mm 37x7 37-7 37*7 37 7 OD 37 THK 7
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EC
OD38xTHK7 mm 38x7 38-7 38*7 38 7 OD 38 THK 7
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EC
OD38xTHK10 mm 38x10 38-10 38*10 38 10 OD 38 THK 10
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EC
OD40xTHK5 mm 40x5 40-5 40*5 40 5 OD 40 THK 5
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EC
OD40xTHK7 mm 40x7 40-7 40*7 40 7 OD 40 THK 7
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EC
OD40xTHK10 mm 40x10 40-10 40*10 40 10 OD 40 THK 10
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EC
OD42xTHK7 mm 42x7 42-7 42*7 42 7 OD 42 THK 7
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EC
OD42xTHK8 mm 42x8 42-8 42*8 42 8 OD 42 THK 8
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EC
OD45xTHK7 mm 45x7 45-7 45*7 45 7 OD 45 THK 7
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EC
OD45xTHK8 mm 45x8 45-8 45*8 45 8 OD 45 THK 8
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EC
OD45xTHK10 mm 45x10 45-10 45*10 45 10 OD 45 THK 10
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EC
OD47xTHK7 mm 47x7 47-7 47*7 47 7 OD 47 THK 7
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EC
OD47xTHK8 mm 47x8 47-8 47*8 47 8 OD 47 THK 8
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EC
OD47xTHK10 mm 47x10 47-10 47*10 47 10 OD 47 THK 10
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EC
OD48xTHK7 mm 48x7 48-7 48*7 48 7 OD 48 THK 7
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EC
OD48xTHK8 mm 48x8 48-8 48*8 48 8 OD 48 THK 8
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EC
OD48xTHK10 mm 48x10 48-10 48*10 48 10 OD 48 THK 10
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EC
OD50xTHK7 mm 50x7 50-7 50*7 50 7 OD 50 THK 7
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EC
OD50xTHK8 mm 50x8 50-8 50*8 50 8 OD 50 THK 8
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EC
OD50xTHK10 mm 50x10 50-10 50*10 50 10 OD 50 THK 10
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EC
OD52xTHK7 mm 52x7 52-7 52*7 52 7 OD 52 THK 7
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EC
OD52xTHK8 mm 52x8 52-8 52*8 52 8 OD 52 THK 8
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EC
OD52xTHK10 mm 52x10 52-10 52*10 52 10 OD 52 THK 10
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EC
OD55xTHK7 mm 55x7 55-7 55*7 55 7 OD 55 THK 7
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EC
OD55xTHK8 mm 55x8 55-8 55*8 55 8 OD 55 THK 8
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EC
OD55xTHK10 mm 55x10 55-10 55*10 55 10 OD 55 THK 10
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EC
OD58xTHK7 mm 58x7 58-7 58*7 58 7 OD 58 THK 7
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EC
OD58xTHK8 mm 58x8 58-8 58*8 58 8 OD 58 THK 8
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EC
OD58xTHK10 mm 58x10 58-10 58*10 58 10 OD 58 THK 10
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EC
OD60xTHK8 mm 60x8 60-8 60*8 60 8 OD 60 THK 8
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EC
OD60xTHK10 mm 60x10 60-10 60*10 60 10 OD 60 THK 10
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EC
OD62xTHK7 mm 62x7 62-7 62*7 62 7 OD 62 THK 7
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EC
OD62xTHK8 mm 62x8 62-8 62*8 62 8 OD 62 THK 8
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EC
OD62xTHK10 mm 62x10 62-10 62*10 62 10 OD 62 THK 10
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EC
OD65xTHK8 mm 65x8 65-8 65*8 65 8 OD 65 THK 8
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EC
OD68xTHK8 mm 68x8 68-8 68*8 68 8 OD 68 THK 8
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EC
OD70xTHK8 mm 70x8 70-8 70*8 70 8 OD 70 THK 8
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EC
OD70xTHK10 mm 70x10 70-10 70*10 70 10 OD 70 THK 10
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EC
OD72xTHK7 mm 72x7 72-7 72*7 72 7 OD 72 THK 7
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EC
OD72xTHK8 mm 72x8 72-8 72*8 72 8 OD 72 THK 8
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EC
OD72xTHK9 mm 72x9 72-9 72*9 72 9 OD 72 THK 9
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EC
OD72xTHK10 mm 72x10 72-10 72*10 72 10 OD 72 THK 10
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EC
OD75xTHK7 mm 75x7 75-7 75*7 75 7 OD 75 THK 7
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EC
OD75xTHK8 mm 75x8 75-8 75*8 75 8 OD 75 THK 8
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EC
OD75xTHK10 mm 75x10 75-10 75*10 75 10 OD 75 THK 10
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EC
OD80xTHK8 mm 80x8 80-8 80*8 80 8 OD 80 THK 8
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EC
OD80xTHK10 mm 80x10 80-10 80*10 80 10 OD 80 THK 10
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EC
OD80xTHK12 mm 80x12 80-12 80*12 80 12 OD 80 THK 12
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EC
OD85xTHK8 mm 85x8 85-8 85*8 85 8 OD 85 THK 8
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EC
OD85xTHK10 mm 85x10 85-10 85*10 85 10 OD 85 THK 10
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EC
OD85xTHK12 mm 85x12 85-12 85*12 85 12 OD 85 THK 12
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EC
OD90xTHK7 mm 90x7 90-7 90*7 90 7 OD 90 THK 7
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EC
OD90xTHK8 mm 90x8 90-8 90*8 90 8 OD 90 THK 8
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EC
OD90xTHK10 mm 90x10 90-10 90*10 90 10 OD 90 THK 10
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EC
OD90xTHK12 mm 90x12 90-12 90*12 90 12 OD 90 THK 12
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EC
OD95xTHK12 mm 95x12 95-12 95*12 95 12 OD 95 THK 12
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EC
OD100xTHK10 mm 100x10 100-10 100*10 100 10 OD 100 THK 10
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EC
OD100xTHK12 mm 100x12 100-12 100*12 100 12 OD 100 THK 12
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EC
OD110xTHK10 mm 110x10 110-10 110*10 110 10 OD 110 THK 10
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EC
OD110xTHK12 mm 110x12 110-12 110*12 110 12 OD 110 THK 12
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EC
OD120xTHK10 mm 120x10 120-10 120*10 120 10 OD 120 THK 10
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EC
OD120xTHK12 mm 120x12 120-12 120*12 120 12 OD 120 THK 12
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EC
OD125xTHK12 mm 125x12 125-12 125*12 125 12 OD 125 THK 12
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EC
OD130xTHK10 mm 130x10 130-10 130*10 130 10 OD 130 THK 10
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EC
OD130xTHK12 mm 130x12 130-12 130*12 130 12 OD 130 THK 12
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EC
OD140xTHK12 mm 140x12 140-12 140*12 140 12 OD 140 THK 12
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EC
OD140xTHK15 mm 140x15 140-15 140*15 140 15 OD 140 THK 15
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EC
OD150xTHK10 mm 150x10 150-10 150*10 150 10 OD 150 THK 10
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No matching sizes found.
Additional sizes may be in stock. Please inquire via LINE.
Additional sizes may be in stock. Please inquire via LINE.