Hm T21-20 Type 21 Mechanical Seal for Pumps

Name: Hm T21-20 Type 21 Mechanical Seal for Pumps
Brand: Zhejiang Hongmi Technology Co., Ltd.
SKU: 2233486115

Zhejiang, ChinaZhejiang Hongmi Technology Co., Ltd.

US$0.70-97.00

1 Set

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Structure

Single End

Pressure

Low Mechanical Seal

Model NO.

Type 21

Speed

General Speed Mechanical Seal

Temperature

Poor Temperature Mechanical Seal

Performance

Stable and Reliable

Standard

Type

Rubber Bellow Mechanical Seal

Balance

Unbalanced

Accreditation

ISO, SGS

OEM/ODM

Available

Samples

Available

Applications

Cooling Pumps, Centrifugal Pumps, Submersible Pump

Delivery

Faster Delivery Time

Transport Package

Neutral Packaging or Customized

Specification

3/8'', 1/2'', 5/8'', 3/4'', 7/8'', 1'', 1 1/8'', 1

Trademark

Origin

China

Production Capacity

5000000pieces/Year

Key features

Versatile Applications: Suitable for cooling, centrifugal, submersible, and industrial pumps handling oils and weakly corrosive solutions.

Compact Design: Features internally mounted, single-spring, non-balanced rubber bellows structure with excellent floating performance.

Wide Size Range: Available in 23 standard sizes from 3/8 inch to 3 inches to fit various pump requirements.

OEM and ODM Support: Accepts customized orders based on samples or designs with flexible customization options.

ISO Certified Quality: Manufactured under ISO9001:2015 certification with rigorous QA/QC inspection processes.

Large Inventory: Maintains over 80,000 sets in stock covering 1,300+ models for immediate delivery.

Fast Delivery: Typical lead time is 2-3 days for small orders after prepayment receipt.

Company profile

Full CustomizationR&D CapabilitiesDigital Management EnterpriseStandardized quality control

Zhejiang Hongmi Technology Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤8.80h

AI-Powered supplier vetting

SummaryThe supplier manufactures dynamic mechanical seals for pumps and PTFE mouth ring static seals. Evidence indicates established R&D and customization capabilities, including three R&D engineers, documented design controls, recent new products, ODM services, and 27 utility patents. Production uses multiple machining, molding, pressing, cleaning, drying, and oven-processing equipment, with two production lines and standardized finished-product inspection instructions. The supplier holds ISO9001:2015 certification and reports documented procedures for service assessment, corrective actions, and complaint handling. However, it lacks an available SDK, does not continuously reconcile production quantities, has only limited export staffing, and reports no Fortune 500 customer collaboration. Financial information is represented only by years rather than assessable financial results, so financial credibility cannot be determined.

Supplier typeThe company is a manufacturer of dynamic mechanical seals for pumps and PTFE mouth ring static seals, supported by machining, molding, pressing, cleaning, drying, and oven-processing equipment. This identifies it as a specialized industrial seal manufacturer rather than a purely trading or service company.

CertificationsThe supplier reports an ISO9001:2015 certificate in both its sustainable-development and management-system information. This is explicit evidence of holding a recognized quality management certification.

After-Sales capabilityThe supplier has written procedures and records for service-capability assessment, corrective and preventive actions, and customer complaint handling. These documented and followed processes support after-sales service capability, although no specific response-time or resolution-performance data is provided.

R&D capabilityThe supplier reports new products within the past year, an innovation-oriented technical team, 27 utility patents, three R&D engineers, and auditable design-input, output, review, verification, and validation documentation. It also provides ODM services, although no available SDK is reported.

Production capacityProduction is supported by two production lines and a broad equipment base including CNC lathes, machining centers, wire-cutting and cutting machines, hydraulic presses, molding equipment, ultrasonic cleaning, dryers, and ovens. Finished-product inspection instructions are uniformly followed, but the factory does not continuously reconcile quantities for every batch or mass production.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These repeated offerings demonstrate broad customization coverage for its products.

Product Q&A

Q:Are you a factory or a trading company?

We are a factory producing mechanical seals and parts, our factory is located in Deqing, Huzhou, welcome to visit us.

Q:Do you accept customized orders?

We have our own brand, but we also support ODM and OEM, welcome to customized inquiry!

Q:What is the price of your products?

The unit price of each model is listed on the website, but for customers with large demand, you can contact us for price consultation and negotiation.

Q:Can I try to get a sample before ordering?

Of course you can, our company provides samples for you free of charge, but you need to pay the international express delivery cost (freight to pay).

Q:How long is the delivery period?

After receiving the prepayment, depending on the quantity of the order, it usually takes 2-3 days for small orders and negotiation for large orders.