WEG LS-GR30X37X4NBR - KIT RETAINER SEAL GR 30X37X4NBR -4
WEG

LS-GR30X37X4NBR

UPC: 7909492792307

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Overview

The WEG KIT RETAINER SEAL GR 30X37X4NBR -4 is a precision-engineered sealing solution designed to deliver superior performance in the most demanding industrial environments. Part of WEG’s trusted GR Series, this retainer seal kit combines high-quality NBR (Nitrile Butadiene Rubber) construction with exacting dimensional specifications (30x37x4mm) to provide a reliable, long-lasting barrier against fluids such as oils, fuels, and hydraulic fluids. Engineered for durability and precision, this seal is a critical component in maintaining system integrity, reducing maintenance costs, and minimizing unplanned downtime in heavy-duty machinery. WEG, a global leader in industrial electric motors, drives, and automation solutions, has extended its expertise to high-performance sealing systems with the GR Series retainer seals. These seals are specifically designed to protect rotating shafts, bearings, and housing bores from contamination while retaining lubricants within critical assemblies. The NBR material offers exceptional resistance to a wide range of industrial fluids, including mineral oils, greases, and aliphatic hydrocarbons, making it ideal for applications where exposure to aggressive media is common. Additionally, the seal’s compact design and tight tolerances ensure a secure fit, preventing leaks and preserving operational efficiency. This retainer seal kit is particularly well-suited for use in pumps, compressors, gearboxes, and other rotating equipment where shaft sealing is essential. In centrifugal pumps, for example, the GR 30X37X4NBR -4 helps maintain pressure differentials and prevents ingress of abrasive particles, extending the life of internal components. Compressors benefit from its ability to withstand high temperatures and fluctuating pressures, ensuring consistent performance in air and gas handling systems. The seal’s versatility also makes it a preferred choice in agricultural machinery, construction equipment, and industrial fans, where reliability under harsh conditions is non-negotiable. Professionals in maintenance, engineering, and procurement rely on WEG’s reputation for quality and innovation when selecting sealing solutions. The GR Series retainer seals are manufactured to strict international standards, ensuring dimensional accuracy and material consistency. Installation is straightforward for experienced technicians, typically involving press-fit or snap-in methods into designated housing grooves. Proper alignment and surface finish of the mating components are critical to achieving optimal sealing performance and longevity. By choosing the WEG KIT RETAINER SEAL GR 30X37X4NBR -4, industries gain a cost-effective, high-performance sealing solution that enhances equipment reliability and operational uptime. Whether in power generation, mining, or manufacturing, this seal kit delivers the durability and precision required to meet the challenges of modern industrial applications. Trust WEG’s decades of engineering excellence to keep your machinery running smoothly, efficiently, and without compromise.
  • Precision-engineered NBR (Nitrile Butadiene Rubber) construction for superior fluid resistance
  • Exact dimensions 30x37x4mm for secure fit in industrial applications
  • Resistant to oils, fuels, hydraulic fluids, and aliphatic hydrocarbons
  • Ideal for pumps, compressors, gearboxes, and heavy-duty machinery
  • Part of WEG’s trusted GR Series, known for reliability and durability

Specifications

Material
NBR (Nitrile Butadiene Rubber)
Series
GR
Size
30x37x4 mm
Package Weight (Imperial)
0.022 LB
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Frequently Asked Questions about WEG

What certifications and standards do WEG products comply with?

WEG products meet extensive international standards across multiple critical categories, including safety, electromagnetic compatibility (EMC), functional safety, and regulatory compliance. Key certifications include UL, cUL, CE, TÜV Rheinland, and compliance with international standards such as EN 61800 series, IEC 61508, ISO 13849-1, and directives like Low Voltage (2014/35/EU), EMC (2014/30/EU), and RoHS. Their products are certified for safe operation in various industrial environments, with specific standards covering electrical safety, thermal performance, electromagnetic immunity, and environmental protection.

What is WEG's warranty policy?

WEG offers an 18-month standard warranty for automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Repairs must be performed by authorized WEG service, and the warranty is limited to the replacement or repair of the product itself, excluding consequential damages. Extended warranty options are available, including purchasing additional coverage at 2.5% of the product's selling price per year, up to 4 additional years.

What industries and applications are WEG products used for?

WEG products are extensively used across multiple industrial sectors, including packaging equipment, material handling, food processing, pumps, medical/lab equipment, door/gate openers, office machinery, and lawn/garden applications. Their versatile DC motors and variable frequency drives (VFDs) are designed for general industrial use, with solutions ranging from off-the-shelf products to custom OEM designs that meet UL/CSA standards for diverse manufacturing and processing environments.

What technical support does WEG offer?

WEG offers comprehensive technical support through multiple channels, including a dedicated Automation Service Department accessible via toll-free phone (1-877-934-3748) and email ([email protected]). They maintain a global network of accredited service centers worldwide, which customers can locate on their website. Additionally, WEG provides warranty support and technical assistance for their industrial automation products, with pre-approval required for warranty repairs.

What are the key features of WEG products?

WEG products feature advanced industrial automation technologies with key characteristics including high performance, flexibility, and connectivity. Their flagship CFW900 Variable Speed Drive demonstrates core product strengths: intelligent thermal management, built-in safety functions, IoT readiness, advanced energy saving capabilities, and comprehensive communication protocols. WEG drives offer robust performance with features like 150% overload capacity, modern graphic HMI, plug-and-play expansion modules, and compatibility across multiple industrial segments including food and beverage, pulp and paper, and manufacturing.

What communication protocols do WEG products support?

WEG products support multiple industrial communication protocols across their product lines, including EtherNet/IP, Modbus-TCP, Modbus-RTU, CANopen, and optional protocols like Profibus-DP and DeviceNet. Specifically, the PLC500 offers 2x Gigabit Ethernet Ports, 1x CAN Port, and 1x RS485 port, enabling seamless integration with major industrial communication networks.

What environmental ratings do WEG products have?

WEG products feature multiple environmental ratings and protection classes. They offer Protection Class 3C2 as a standard coating and Protection Class 3C3 as an optional extra coating, both compliant with IEC 60721-3-3. Environmental specifications include air relative humidity from 5% to 95% non-condensing, altitude ratings up to 1,000m standard (with current derating above that), and Pollution Degree 2 classification with non-conductive pollution requirements.

What accessories are available for WEG products?

WEG offers a comprehensive range of accessories across multiple product lines. For variable frequency drives like the CFW900, accessories include I/O expansion modules, communication modules, encoder modules, temperature transducer modules, relay output modules, and HMI accessories. These accessories expand communication capabilities, input/output functions, and application flexibility. Most accessories are interchangeable between drive frames and can be installed in backplane slots, with communication network accessories limited to one per variable speed drive.

What are the main product lines offered by WEG?

WEG offers a comprehensive range of industrial automation products, including variable frequency drives (CFW series like CFW100, CFW300, CFW500), soft starters (SSW series including SSW05, SSW07, SSW900), and the innovative Motion Fleet Management (MFM) system for predictive maintenance and asset monitoring. Their product lines are designed to support industrial automation needs across various sectors, providing solutions for motor control, fleet management, and operational efficiency.

How are WEG products typically installed?

WEG products are typically installed with careful attention to mounting specifications, protection ratings, and airflow requirements. For variable speed drives like the CFW900, installation methods include surface mounting, flange mounting, and side-by-side configurations with specific clearance guidelines. Installers must follow precise dimensional requirements for each product frame size, ensuring proper ventilation and electrical connections.