Mechanical seal for pump
1 Scope
This standard specifies the basic type, size, parameters, model and material code, technical requirements, test methods, packaging, marking and storage of mechanical seals for pumps.
This standard is applicable to the mechanical seals of centrifugal pumps, vortex pumps and other similar pumps.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 1184-1996 Geometrical tolerancing—Geometrical tolerances for features without individual tolerance indications
GB/T 10444 Method of type establishment for mechanical seals
GB/T 14211 Test method of mechanical seal
JB/T 4127.1 Specification for mechanical seals
JB/T 6374 Silicon carbide rings of mechanical seal—Specification
JB/T 7757.1 Cylindrical helical compression spring for mechanical seal
JB/T 7757.2 The rubber O-ring for mechanical seal
JB/T 8724 Reactively sintered silicon nitride seal ring for mechanical seal
JB/T 8871 Bank of hard alloy sealing ring for mechanical seal
JB/T 8872 Specifications for carbon-graphite sealing ring for mechanical seals
JB/T 8873 Specifications on filling-PTFE and PTFE blank for mechanical seal
JB/T 10874 Specifications for alumina ceramics sealing rings of mechanical seal
3 Basic types, dimensions, parameters, models and material codes
3.1 Basic type
There are seven basic types of mechanical seals for pumps:
a) Type 103: Built-in type, single end face, single-spring, unbalanced, parallel-coil spring transmission mechanical seal, as shown in Figure 1;
b) Type B103: Built-in type, single end face, single-spring, balanced, parallel-coil spring transmission mechanical seal, as shown in Figure 2;
c) Type 104: Built-in type, single end face, single-spring, unbalanced sleeve transmission mechanical seal, as shown in Figure 3; see its derivative type 104a in Figure 4;
d) Type B104: Built-in type, single end face, single-spring, balanced sleeve transmission mechanical seal, as shown in Figure 5; see its derivative type B104a in Figure 6;
e) Type 105: Built-in type, single end face, multi-spring, unbalanced screw transmission mechanical seal, as shown in Figure 7;
f) Type B105: Built-in type, single end face, multi-spring, balanced screw transmission mechanical seal, as shown in Figure 8;
g) Type 114: Externally-mounted type, single seal, single spring, over-balanced fork transmission mechanical seal, as shown in Figure 9; see its derivative Type 114a in Figure 10.
Foreword i
1 Scope
2 Normative references
3 Basic types, dimensions, parameters, models and material codes
3.1 Basic type
3.2 Main dimensions
3.3 Basic parameters
3.4 Models
3.5 Material codes
4 Technical requirements
4.1 Technical requirements for main parts
4.2 Performance requirements
4.3 Requirements for installation and use
5 Test method
6 Packaging, marking and storage
