This standard specifies the type, size series and tolerance of square and stepped coaxial seals for hydraulic cylinder pistons and piston rod dynamic seals. This standard applies to the seals of reciprocating hydraulic cylinder pistons and piston rods (plungers) with hydraulic oil as the working medium, pressure ≤40MPa, speed ≤5m/s, and temperature range of -40 to 200℃. This standard applies to coaxial seals with O-shaped rubber seals as elastomers, and also to coaxial seals with other cross-sectional types of rubber or rubber-plastic seals as elastomers. GB/T 15242.1-1994 Size series and tolerances of coaxial seals for hydraulic cylinder pistons and piston rod dynamic seals GB/T15242.1-1994 Standard download decompression password: www.bzxz.net

IIDC 621. 226-242 : 62-762
National Standard of the People's Republic of China
GB/T 15242.1- 94
Hydraulic fluid power-Cylinder rnd and pistonseals for reciprucatiag applications olco-axial sealsDimensions and tolerancesPublished on October 17, 1994
Implemented on October 1, 1995
Published by the State Administration of Technical Supervision
National Standard of the People's Republic of China
Hydraulic fluid power-Cylinder rnd and pistonseals for reciprucatiag applications olco-axial sealsDimensions and tolerancesPublished on October 17, 1994
Implemented on October 1, 1995
National Standard of the People's Republic of China
Hydraulic fluid power-Cylinder rnd and pistonseals for reciprucatiag applications olco-axial sealsDimensions and tolerances sealstrinenslonsandtoberances1Subject content and applicable scope
GB/T15242.1—94
This standard specifies the types, dimension series and tolerances of square and trapezoidal coaxial seals for pressure reducing and active rod seals.
This standard is applicable to the seals of hydraulic pistons and pistons (injection plugs) with hydraulic oil as the working medium, pressure ≤40MPa, speed 5m*, and temperature range of -40～+200C. This standard is not only applicable to auxiliary air seals with heart-shaped rubber as the elastic body, but also to other cross-sectional types of rubber or rubber seals with round as the regular body.
2 Reference standards
23 Extraction of hydraulic system components, inner diameter, outer diameter, GB3452.1 Dimension system and tolerance of hydraulic and pneumatic 0-shaped rubber seal rings, GB15242.3 Pressure relief and active cold rod dynamic seals, coaxial seals for installation, uniform size series and tolerances 3 Terms and codes
3.1 Terms
3.1.1 Square coaxial pull seal
It is a coaxial seal that is a combination of a rectangular ring and a rectangular rubber seal. 3.1.2 Stepped coaxial support
It is a step-shaped standard ring and a rubber seal. 3.2 Code
——Nominal outer diameter of coaxial seal;
——Nominal inner diameter of coaxial seal;
——Inner diameter of hydraulic cylinder (rod seal is inner diameter) 4--Hot rod seal diameter (or piston seal structure bottom diameter) d, U-shaped rubber seal cross-section diameter
——Width of shaft seal
TF-square high shaft seal;
——Step-shaped solid shaft seal,
User Control Technology Supervision Month 1994-10-17 Approved 1995-10-01 Implementation
4 Type, size series and tolerance
C#/T: 15242.1-94
4.1 Elastic size series and tolerances of square coaxial seals 4.1.1 Square high shaft seals are suitable for piston seals. Their types are shown in Figure 1. The size series and tolerances of square coaxial seals in Figure 1 shall comply with the requirements of Table 1. 4. 1.2
Current specification code
Nominal size
Specification code
0400 B
0S5G C
7G9
0700 B
GB/T15242.1—94
Continued table 1
Nominal size
Total specification code
11x sizebZxz.net
=600 B
GB/T 15242.1
Continued table 1
Public size
Specification code
3200 B
45na t
5GaG H
sann t:
Edit: The red inner diameter with "()" is non-priority manufacturing, GR/T15242.1-94
Continued Table 1
Nominal size
The "\" indicates the inner dimension of the elastomer structure agreed upon by the user and the manufacturer, 1) Limited to the use of old products or outdated parts. 4.2 Types, size series and tolerances of stepped coaxial seals 4.2.1 Stepped coaxial seals are suitable for flexible support <column> joint seals. Their type is shown in Figure 2. GB/T15242.1—94 4.2.2 The size series and category of stepped intermediate shaft seat seals shall comply with the provisions of Table 2. 2 Grid code C253 B Nominal size Ball size— 0. 15 Grid code 0566 5
GB/T15242.1—94
Continued Table 2
Nominal size
: The rod with “>” is light and preferred.
5 Ladder mark
5.1 Marking method for square average and same-beat sealed bulls
Male ball size
95, 5
TF XX : X -
G/T15242.1—94
GB/T15242.1-54
Standard No.
Elastic material No.
Material group No.
Specification code
. Name: Square coaxial seal
Core: Inner diameter is 100mm. Width b is 6mm. Material is the first group of PTFF elastic body material. The second group is selected. Its mark is:
Shaped return shaft seal TFI000H-GB15242.1—94 Note: 1. The group number is determined by the user and the manufacturer. 2. Marking method of stepped coaxial seal XXXX
GB/T 15242.1.-. 91
Standard No.
Elastomer material group No. 1
Plastic material group No. 1
Specification No.
Name, step-shaped coaxial seal
Tree: dynamic step-shaped coaxial seal with active rod diameter C. Plastic slurry material selection is the same as the first group FTFE, elastic material selection is the first group, and its mark is
Step shaft seal: TJG5CGB/T15242.1-4, materials are prepared by the participants
Additional explanation:
Standard Japanese Ministry of Machinery Industry:
This standard is proposed by the National Hydraulic and Pneumatic Standardization Technical Requirements Conference. This standard is sponsored by the Guangzhou Machine Tool Research Institute of the Ministry of Machinery Industry and the Otsu Institute of Machinery Industry of the Ministry of Machinery Industry. The drafter of this standard is a giant stop, pulse, Jinsheng State,
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