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Sakagami Ltd., > Product > Hydraulic Seals > SKY-Packings

SKY-Packings （Piston＆rod packings）

Standard Material： NBR(RN906)

Profiles (Left section)

SKY-1
en_SKY-1 en_SKY-2

Service range

Standard Material
Material codes Pressure MPa {kgf/㎠} Max. speed
(m/s)		 Temperature range
(℃)
NBR(RN906)
FKM[RF905]
FKM[RF907]		 SKY-Packings〈Clearance of extrusion H9/f8〉 14 ｛140｝ 1[0.5] ー10～80
[ー5～150]
w/Back-up rings 21 ｛210｝ 0.5
w/Standard & high pressure back-up rings 28 ｛280｝

Material codes・Max. speed・The range with [ ] refers FKM materials

Characteristics

SKY-Packings are the most prominent hydraulic packings for both pistons and rods.
SKY-Packings can be installed in one piece groove. They achieve a cost cut and compacter cylinder design by reducing parts for divided grooves.

Remarks

  • ●The D1 tolerance of SKY-8-5 should be ± 0.1.
  • ●Packings should be installed in the direction specified on the above schematic.
  • ●Consider adopting split grooves if one-piece groove is technically adverse.
  • ●Split grooves are recommended for SKY-18 and smaller products.
  • ●φD H9/f8 changes according to the variation of the bearing structure.
  • ● For applications installed in combination with wear rings, refer to the dimension table of the applicable wear rings.
  • ※ For applications without back-up rings, refer to the limiting curve of extrusion of seals for size (φd2)
  • ※JIS standard sequence of surface roughness symbols refer to HERE.

Dimension table

Packings & Groove dimensions (Unit：mm） Part No.
SKY-Packings Standard back-up ring
（PT111）
d D H GA GB D1 d1
(Reference)		 L Standard material
（RN 906）		 High temperature-resistant
（RF 905）
（RF 907）		 Low temperature-resistant
（RN 903）		 HNBR
(RP902) (RP903)
8 14 3.7 4.2 5.2 13 8.4 3 1.5 SKY-8-5*
         TBC-8-5*
10 18 5 5.7 6.7 17 10.4 3 1.5 SKY-10-1*
         TBC-10-7*
12 20 5 5.7 6.7 19 12.4 3 1.5 SKY-12-1*
 SKY-12-15F       TBC-12-3*
12.5 20 5 5.7 6.7 19 12.9 3 1.5 SKY-12.5
         TCS-20×12.5
14 22 5 5.7 6.7 21 14.4 3 1.5 SKY-14 SKY-14F
   ● ● TCS-22×14
16 24 5 5.7 6.7 23 16.4 3 1.5 SKY-16 SKY-16F   ●   TCS-24×16
17 25 5 5.7 6.7 24 17.4 3 1.5 SKY-17-1*
         TCS-25×17
18 26 5 5.7 6.7 25 18.4 3 1.5 SKY-18 SKY-18F   ●   TCS-26×18
20 28 5 5.7 6.7 27 20.4 3 1.5 SKY-20 SKY-20F SKY-20N     TCS-28×20
20 30 6 7 8.5 29 20.4 3 1.5 SKY-20-1*
         TBC-20-6*
22 30 5 5.7 6.7 29 22.4 3 1.5 SKY-22 SKY-22F   ● ● TCS-30×22
22.4 30 5 5.7 6.7 29 22.8 3 1.5 SKY-22.4 SKY-22.4F   ● ● TCS-30×22.4
23.5 31.5 5 5.7 6.7 30.5 23.9 3 1.5 SKY-23.5 SKY-23.5F       TCS-31.5×23.5
24 32 5 5.7 6.7 31 24.4 3 1.5 SKY-24-2*
         TCS-32×24
25 33 5 5.7 6.7 32 25.4 3 1.5 SKY-25 SKY-25F SKY-25N ●   TCS-33×25
26 34 5 5.7 6.7 33 26.4 3 1.5 SKY-26-1*
         TBC-26-5*
27 35 5 5.7 6.7 34 27.4 3 1.5 SKY-27-1*
         TCS-35×27
28 35.5 5 5.7 6.7 34.5 28.4 3 1.5 SKY-28 SKY-28F SKY-28N ● ● TCS-35.5×28
28 36 5 5.7 6.7 35 28.4 3 1.5 SKY-28A         TCS-36×28
30 38 5 5.7 6.7 37 30.5 3.5 3 SKY-30-1*
         TBC-30-5*
30 40 6 7 8.5 39 30.5 3.5 3 SKY-30 SKY-30F SKY-30N     TCS-40×30
31.5 41.5 6 7 8.5 40.5 32 3.5 3 SKY-31.5 SKY-31.5F       TCS-41.5×31.5
32 42 6 7 8.5 41 32.5 3.5 3 SKY-32         TCS-42×32
35 45 6 7 8.5 44 35.5 3.5 3 SKY-35 SKY-35F SKY-35N     TCS-45×35
35.5 45 6 7 8.5 44 36 3.5 3 SKY-35.5 SKY-35.5F SKY-35.5N ● ● TCS-45×35.5
35.5 45.5 6 7 8.5 44.5 36 3.5 3 SKY-35.5A         TCS-45.5×35.5
36 46 6 7 8.5 45 36.5 3.5 3 SKY-36 SKY-36F     ● TCS-46×36
38 48 6 7 8.5 47 38.5 3.5 3 SKY-38-1*
         TBC-38-3*
40 50 6 7 8.5 49 40.5 3.5 3 SKY-40 SKY-40F SKY-40N   ● TCS-50×40
45 55 6 7 8.5 54 45.5 3.5 3 SKY-45 SKY-45F SKY-45N     TCS-55×45
45 56 7 8 9.5 55 45.5 3.5 3 SKY-45A SKY-45AF SKY-45AN ● ● TCS-56×45
50 60 6 7 8.5 59 50.5 3.5 3 SKY-50 SKY-50F SKY-50N     TCS-60×50
53 63 6 7 8.5 62 53.6 3.5 3 SKY-53 SKY-53F     ● TCS-63×53
55 65 6 7 8.5 64 55.6 3.5 3 SKY-55 SKY-55F SKY-55N     TCS-65×55
56 66 6 7 8.5 65 56.6 3.5 3 SKY-56 SKY-56F   ● ● TCS-66×56
58 68 6 7 8.5 67 58.6 3.5 3 SKY-58-1*
         TBC-58-4*
60 70 6 7 8.5 69 60.6 3.5 3 SKY-60 SKY-60F SKY-60N     TCS-70×60
60 71 7 8 9.5 70 60.6 3.5 3 SKY-60A SKY-60AF       TCS-71×60
61 71 6 7 8.5 70 61.6 3.5 3 SKY-61-1*
         TC-SKY-61-1*
63 73 6 7 8.5 72 63.6 3.5 3 SKY-63 SKY-63F SKY-63N   ● TCS-73×63
65 75 6 7 8.5 74 65.6 3.5 3 SKY-65 SKY-65F SKY-65N     TCS-75×65
67 77 6 7 8.5 76 67.6 3.5 3 SKY-67 SKY-67F   ● ● TCS-77×67
70 80 6 7 8.5 79 70.6 3.5 3 SKY-70 SKY-70F SKY-70N ● ● TCS-80×70
71 80 6 7 8.5 79 71.6 3.5 3 SKY-71 SKY-71F     ● TCS-80×71
75 85 6 7 8.5 84 75.6 3.5 3 SKY-75 SKY-75F SKY-75N ●   TCS-85×75
80 90 6 7 8.5 89 80.6 3.5 3 SKY-80 SKY-80F SKY-80N ● ● TCS-90×80
85 95 6 7 8.5 94 85.6 3.5 3 SKY-85-2*
         TBC-85-1*
85 100 9 10 12 98 85.6 4 4 SKY-85 SKY-85F SKY-85N ● ● TCS-100×85
86 100 8.5 9.5 11.5 98 86.6 4 4 SKY-86 SKY-86F       TCS-100×86
90 100 6 7 8.5 99 90.6 4 4 SKY-90-1*
         TBC-90-13*
90 105 9 10 12 103 90.6 4 4 SKY-90 SKY-90F SKY-90N   ● TCS-105×90
95 110 9 10 12 108 95.6 4 4 SKY-95 SKY-95F       TCS-110×95
96 111 9 10 12 109 96.6 4 4 SKY-96-1*
         TBC-96-1*
98 112 8.5 9.5 11.5 110 98.6 4 4 SKY-98 SKY-98F       TCS-112×98
100 115 9 10 12 113 100.6 4 4 SKY-100 SKY-100F SKY-100N ● ● TCS-115×100
105 120 9 10 12 118 105.6 4 4 SKY-105-2*
         TBC-105-1*
106 120 8.5 9.5 11.5 118 106.6 4 4 SKY-106 SKY-106F SKY-106N     TCS-120×106
110 125 9 10 12 123 110.6 4 4 SKY-110-3*
     ● ● TBC-110-1*
112 125 8.5 9.5 11.5 123 112.6 4 4 SKY-112 SKY-112F       TCS-125×112
112 125 9 10 12 123 112.6 4 4 SKY-112A SKY-112AF   ● ● TCS-125×112
115 130 8.5 9.5 11.5 128 115.6 4 4 SKY-115-2*
         TBC-115-2*
118 132 8.5 9.5 11.5 130 118.6 4 4 SKY-118 SKY-118F SKY-118N     TCS-132×118
119 133 8.5 9.5 11.5 131 119.6 4 4 SKY-119-1*
         TBC-119-1*
120 135 9 10 12 133 120.6 4 4 SKY-120-2*
     ●   TBC-120-1*
125 140 9 10 12 138 125.6 4 4 SKY-125 SKY-125F SKY-125N ● ● TCS-140×125
130 145 9 10 12 143 130.6 4 4 SKY-130-1*
     ●   TBC-130-1*
132 145 8.5 9.5 11.5 143 132.6 4 4 SKY-132 SKY-132F       TCS-145×132
136 150 8.5 9.5 11.5 148 136.6 4 4 SKY-136 SKY-136F       TCS-150×136
140 155 9 10 12 153 140.6 4 4 SKY-140 SKY-140F   ● ● TCS-155×140
145 160 9 10 12 158 145.6 4 4 SKY-145 SKY-145F SKY-145N     TCS-160×145
150 165 9 10 12 163 150.6 4 4 SKY-150 SKY-150F       TCS-165×150
155 170 9 10 12 168 155.6 4 4 SKY-155 SKY-155F       TCS-170×155
160 175 9 10 12 173 160.6 4 4 SKY-160 SKY-160F   ● ● TCS-175×160
165 180 9 10 12 178 165.6 4 4 SKY-165 SKY-165F       TCS-180×165
170 185 9 10 12 183 170.6 4 4 SKY-170-1*
         TBC-170-1*
175 190 9 10 12 188 175.6 4 4 SKY-175 SKY-175F       TCS-190×175
180 200 12 13 15.5 198 180.8 5 5 SKY-180 SKY-180F   ● ● TCS-200×180
185 205 12 13 15.5 203 185.8 5 5 SKY-185-1*
         TBC-185-1*
190 210 12 13 15.5 208 190.8 5 5 SKY-190-3*
 SKY-190-1F*
       TBC-190-4*
195 215 12 13 15.5 213 195.8 5 5 SKY-195-1*
         TBC-195-6*
200 220 12 13 15.5 218 200.8 5 5 SKY-200 SKY-200F       TCS-220×200
204 224 12 13 15.5 222 204.8 5 5 SKY-204 SKY-204F       TCS-224×204
210 230 12 13 15.5 228 210.8 5 5 SKY-210-2*
 SKY-210-1F*
       TBC-210-4*
215 235 12 13 15.5 233 215.8 5 5 SKY-215-1*
         TBC-215-3*
220 240 12 13 15.5 238 220.8 5 5 SKY-220-1*
         TBC-220-3*
224 244 12 13 15.5 242 224.8 5 5 SKY-224 SKY-224F       TCS-244×224
230 250 12 13 15.5 248 230.8 5 5 SKY-230 SKY-230F       TCS-250×230
235 255 12 13 15.5 253 235.8 5 5 SKY-235-1*
         TBC-235-1*
237 257 12 13 15.5 255 237.8 5 5 SKY-237-1*
         TC-SKY-237-1*
240 260 12 13 15.5 258 240.8 5 5 SKY-240-3*
 SKY-240-1F*
       TBC-240-1*
245 265 12 13 15.5 263 245.8 5 5 SKY-245-1*
         TBC-245-4*
250 270 12 13 15.5 268 250.8 5 5 SKY-250 SKY-250F       TCS-270×250
260 280 14 15 18 278 260.8 5 5 SKY-260 SKY-260F       TCS-280×260
280 300 14 15 18 298 280.8 5 5 SKY-280 SKY-280F       TCS-300×280
290 310 14 15 18 308 290.8 5 5 SKY-290-1*
         TBC-290-1*
295 315 14 15 18 313 295.8 5 5 SKY-295 SKY-295F       TCS-315×295
300 320 12 13 16 318 300.8 5 5 SKY-300-3*
         TBC-300-3*
310 330 14 15 18 328 311 5 5 SKY-310-1*
         TBC-310-2*
315 335 14 15 18 333 316 5 5 SKY-315         TCS-335×315
335 355 14 15 18 353 336 5 5 SKY-335         TCS-355×335
355 375 14 15 18 373 356 5 5 SKY-355         TCS-375×355
380 400 14 15 18 398 381 5 5 SKY-380 SKY-380F       TCS-400×380
400 420 14 15 18 418 401 5 5 SKY-400         TCS-420×400
430 450 14 15 18 448 431 5 5 SKY-430         TCS-450×430
450 470 14 15 18 468 451 5 5 SKY-450         TCS-470×450
480 500 14 15 18 498 481 5 5 SKY-480         TCS-500×480
500 525 17 18 21 522 501 5 5 SKY-500-1*
         TBC-500-2*
540 560 14 15 18 558 541 5 5 SKY-540-1*
         TBC-540-1*
550 570 13 14 17 568 551 5 5 SKY-550-1*
         TBC-550-1*
610 630 14 15 18 628 611 5 5 SKY-610-1*
         TBC-610-1*
630 655 17 18 21 652 631 5 5 SKY-630-1*
         TBC-630-1*
660 690 18 19 22 687 661 5 5 SKY-660-1*
         TBC-660-2*
770 800 18 19 22 797 771 5 5 SKY-770-1*
         TBC-770-1*
  • ★Orders and inquiries are acceptable by part numbers. Part numbers marked ※ have been changed each part numbers. Please check HERE for the previous part number.
  • ★Part numbers in blue letters are the products in stock.
  • ★Packings with the part numbers in light Italic require the confirmation of their availability prior to ordering. These items are subject to the abolishment without notice. Reclamation of an abolished product requires producing the new tooling at your expense.
  • ★Packings are adequately packaged for the optimum storage. Refer to Cautions for the handling and storage.
  • ★The heat resistant material for the products larger than SKY-300F is RF907.
  • ★Inquiries for HNBR materials:
  • 　・Please specify material code RP903 or RP902 in addition to the standard part number.
  • 　　RP903 is applicable to hign temperature operation and to water polyglycol operating fluid.
  • 　　RP902 is the material applicable to both high and low temperature operating conditions.
  • 　・All HNBR products are manufactured on a made-to-order base.
  • 　・● indicates manufacturable items. For those items without ● sign, please inquire of us.
  • 　・Engraved marks may be variant because some dimensions/items are manufactured by using toolings for different materials.
  • ★Performance and material tests on packing and seals are also available. Please contact us for more information.

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Catalogue Download (PDF)

Materials

Substances related to environment

Technical information

TECHNICAL INFORMATION
技術情報
Installing Precautions
Guidance for Designing and Processing Seal Systems
Typical Configuration Example of Packings
Service Range of Packings
Typical Configurations of Seal Systems
Installation Method
Cause of Trouble and Countermeasures
Remarks