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MULTI-SPRING

MULTI-SPRING
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MULTI-SPRING

Product catalog summary
Multispring Seals Overview
Characteristics: Multispring seals are unbalanced, attached to the shaft using Allen screws, and are not dependent on the rotation direction.
Operating Limits: These seals operate within a diameter range of 18 to 100 mm, pressure up to 16 kg/cm², speed of 20 m/s, and temperature range of -15 to +200°C. The temperature resistance depends on the material of the secondary seals. The operating limits are defined by the PV factor, determined by the sealing system characteristics and application specifics.
Description: Designed for use with barrier fluids, these seals isolate the springs from the fluid product. They comply with API 53A and API54 assemblies and are recommended for applications involving toxic, pollutant, or potentially dangerous products. A pumping ring is available to reduce temperature between contact surfaces and facilitate barrier fluid movement. A balanced version with a stepped shaft is also available.
Components: The seals consist of rotating and stationary contact surfaces, O-rings, springs, a metal frame, set screws, and a ring.
Dimensions: The document provides a detailed dimensions chart for various shaft sizes, indicating the rotary part, stationary part, and total length in millimeters.
Additional Models: Other models like LMS11, LMS13, LMS14, LMS15D, and LMS20 are described, each with specific characteristics, operating limits, and components. These models offer features like detachable contact surfaces for versatility, compliance with EN 12756 standards, and suitability for high-pressure applications.
Applications: Suitable for a wide range of applications, including those involving particle-laden fluids, high pressures, and aggressive chemicals. They provide a uniform load and are available in both metric and inch dimensions.
Specifications:
  • LMS20: Balanced seal, attached by Allen screws, suitable for high-pressure applications. Operating limits include a shaft diameter (d1) of 14 to 100 mm, pressure (p) up to 60 kg/cm², speed (v) up to 25 m/s, and temperature (t) from -15 to +200°C.
  • LMS22: Unbalanced seal, versatile with detachable contact surfaces. Operating limits include d1 of 20 to 100 mm, p up to 12 kg/cm², v up to 20 m/s, and t from -40 to +200°C.
  • LMS26: Balanced seal with external mounting, protected springs, and static O-ring to prevent shaft fretting. Operating limits include p up to 50 kg/cm², v up to 50 m/s, and t from -20 to +140°C.
  • LMS27: Balanced seal for vertical stirrers, with optional cooling/lubrication systems. Operating limits include d1 of 25 to 160 mm, p up to 6 kg/cm², v up to 2 m/s, and t from -20 to +150°C.
  • LMS28: Balanced seal for vertical agitators, compatible with DEBRIS cleaning systems. Operating limits include d1 of 25 to 175 mm, p up to 15 kg/cm², v up to 2 m/s, and t from -20 to +200°C.
Components: Common components across the seals include rotating and stationary contact surfaces, O-rings, springs, metal frames, set screws, and additional elements like PTFE wedges or gaskets for specific models.
Dimensions: Extensive dimension charts are included for each seal type, providing measurements in both millimeters and inches for various components and configurations.
Recommendations: Emphasizes the importance of selecting the appropriate seal type based on application requirements, such as pressure, temperature, and chemical compatibility, to ensure optimal performance and longevity.
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Catalog excerpts

MULTI-SPRING-1

MULTISPRING SEALS COMPONENTS: 1 Rotating contact surface 1a Rotating contact surface 2 Stationary contact surface 2a Stationary contact surface 3 O-rings 3a O-rings 3b O-rings 3c O-rings 4 Springs 5 Metal frame 5a Set screws 5b Ring CHARACTERISTICS: • Unbalanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction. OPERATING LIMITS: d,= 18 - 100 mm p= 16 kg/cm! v= 20 m/s t= -15- +200°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: Double seal for working with barrier fluids in which the springs are isolated from the fluid product. API 53A and API54 assemblies. Recommended in applications with toxic, pollutant or potentially dangerous products in which safety is an important factor. Available with a pumping ring on the casing to reduce the temperature between the contact surfaces and facilitate the barrier fluid movement (reference LMS10-F). Available in a balanced version with a stepped shaft (reference LM10DB). Contact surface kits available. DIMENSIONS CHART Dimensions in mm I Shaft I Rotary part I Stationary part I Total length Dimensions subject to changes or modifications. SAFE INDUSTRY

 Open the catalog to page 1
MULTI-SPRING-2

MULTISPRING SEALS COMPONENTS: 1 Rotating contact surface 2 Stationary contact surface 3 O-rings 3a O-rings 4 Springs 5 Metal frame 5a Set screws 5b Ring CHARACTERISTICS: • Unbalanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction. OPERATING LIMITS: d,= 18 - 100 mm p= 10 kg/cm! v= 20 m/s t= -15- +200°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: The contact...

 Open the catalog to page 2
MULTI-SPRING-3

MULTISPRING SEALS COMPONENTS: 1 Rotating contact surface 2 Stationary contact surface 3 O-rings 3a O-rings 4 Springs 5 Metal frame 5a Set screws 5b Ring CHARACTERISTICS: • Unbalanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction. OPERATING LIMITS: d = 20 - 100 mm p= 12 kg/cm! v= 20 m/s t= -40- +200°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: The contact...

 Open the catalog to page 3
MULTI-SPRING-4

MULTISPRING SEALS LMS14 SECTORS: COMPONENTS: 1 Rotating contact surface 2 Stationary contact surface 3a O-rings 3b O-rings 3c O-rings 4 Springs 5 Metal frame 5a Set screws 5b Coupling pin CHARACTERISTICS: • Balanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction. OPERATING LIMITS: d,= 18 - 100 mm p= 14 kg/cm! v= 15 m/s t= -15- +200°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application....

 Open the catalog to page 4
MULTI-SPRING-5

MULTISPRING SEALS Rotating contact surface Rotating contact surface Stationary contact surface Stationary contact surface O-rings O-rings O-rings Springs Metal frame Set screws CHARACTERISTICS: • Unbalanced. • System attached to the shaft by allen screws. • Not dependent on the rotation direction. (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: Double seal for working with barrier fluids in which the springs...

 Open the catalog to page 5
MULTI-SPRING-6

MULTISPRING SEALS COMPONENTS: 1 Rotating contact surface 2 Stationary contact surface 3 O-rings 3T PTFE wedge 3a O-rings 3Ta PTFE gasket 4 Springs 5 Metal frame 5a Set screws 5b Ring CHARACTERISTICS: • Unbalanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction. OPERATING LIMITS: d,= 14 - 100 mm p= 10 kg/cm! v= 20 m/s t= -15- +200°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: The...

 Open the catalog to page 6
MULTI-SPRING-7

MULTISPRING SEALS COMPONENTS: 1 Rotating contact surface 2 Stationary contact surface 3 O-rings 3T PTFE wedge 3a O-rings 3Ta PTFE gasket 4 Springs 5 Metal frame 5a Set screws 5b Ring CHARACTERISTICS: • Balanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction. (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: The balanced contact surface design allows the mechanical seal...

 Open the catalog to page 7
MULTI-SPRING-8

MULTISPRING SEALS COMPONENTS: 1 Rotating contact surface 3a O-rings 4 Springs 5 Metal frame 5a Set screws CHARACTERISTICS: • Unbalanced. • System attached to the shaft by alien screws. • Not dependent on the rotation direction OPERATING LIMITS: d,= 20 - 100 mm p= 12 kg/cm! v= 20 m/s t= -40 - +200°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: The contact surface of the rotating part can be detached,...

 Open the catalog to page 8
MULTI-SPRING-9

MULTISPRING SEALS LMS26 SECTORS: COMPONENTS: 1 Rotating contact surface 2 Stationary contact surface 3a O-ring 4 Spring 5 Metal frame 6 Ring 7 Metal frame 8 Setting clips CHARACTERISTICS: • Equilibrado. • Sistema rotacion independiente • Multimuelle • External mounting. t= -20- +140°C (*) (*) The temperature resistance depends on the material of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: Balanced mechanical seal with protected springs to prevent them from blocking...

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