Is stainless steel an option?

Yes, stainless steel is an acceptable material option for this product.

What are the main applications for this seal?

It is used in metallurgical, chemical, engineering, construction, mining, petroleum machinery, and instrumentation.

M30 NBR Rubber Bonded Seal in Metric Size

Name: M30 NBR Rubber Bonded Seal in Metric Size
Brand: Ningbo Boman Mechanical & Technology Co., Ltd.
SKU: 823176365

Zhejiang, ChinaNingbo Boman Mechanical & Technology Co., Ltd.

US$0.02-0.90

100 Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Type

Lock Washer

Material

Steel

Model NO.

NBR Bonded Seal

Combination Washer Structure

B Type

Combination Washer Packaging

Half a Pack

Spring Washer Type

Standard

Advantage

Oil Proof, Alkali Resistance

Size

Any

Color

Any

Lead Time

20days

Transport Package

Bag

Specification

Self-centerIng/Non-Self-centerIng

Trademark

Boman

Origin

China

HS Code

4016931000

Production Capacity

1000000PCS/Month

Key features

Superior Material Quality: Raw materials from DuPont, Dow Corning, Bayer, and 3M ensure top-tier performance.

Wide Size Availability: Over 40,000 standard molds available; custom sizes fully accepted.

Comprehensive Certifications: ISO/TS 16949, Wras, KTW-W270, Watermark, LFGB, RoHs, Reach, and FDA certified.

High Pressure Tolerance: Designed to withstand operating pressures up to 50MPa.

OEM and ODM Services: Full design support with 3D/CAD drawings and logo customization available.

Versatile Material Options: NBR rubber bonded seals available; stainless steel options also accepted.

Rapid Delivery: Standard delivery within 7-10 days; peak/off-peak lead time within 15 workdays.

Company profile

Ningbo Boman Mechanical & Technology Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2010-09-08Nearest Port: Ningbo, ShanghaiAverage Response Time: ≤15hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA

AI-Powered supplier vetting

SummaryNingbo Boman Mechanical & Technology Co., Ltd. is identified as a China-based manufacturer/factory producing rubber seals and related rubber, plastic, and silicone products. The supplier reports four production lines, 31–40 quality-control staff, and stated annual output across several product categories. It claims more than 12 years of export experience in one description and more than 15 years in another, with exports representing 71%–90% of total sales. Certifications listed include IATF 16949/TS 16949, ISO 9001, ISO 14001, ISO 20000, and product-related compliance certifications. Evidence also supports customization through a technical team that can adjust rubber formulas and an in-house mold department. The supplier states that it serves several global top 500 companies and offers a recall response for defective cargo, but no independently verified customer names or service-performance records are provided. Financial strength cannot be assessed because financial figures are excluded.

CertificationsThe supplier lists TS 16949, ISO 9001, ISO 14001, and ISO 20000 management-system certifications, and states that its factory is IATF 16949:2016 certified. It also lists KTW-W270, Watermark, LFGB, RoHS, REACH, and FDA product certifications or compliance credentials, although certificate documents and validity details are not provided.

After-Sales capabilityThe supplier explicitly claims to have a dedicated after-sales team and to recall problematic cargo 100% at the first opportunity. This supports a stated corrective-response capability, but no evidence is provided on response times, procedures, or verified service outcomes.

R&D capabilityThe supplier states that it conducts R&D and follows technological innovation, employs 21–30 R&D engineers, and can develop rubber-material formulas for different requirements. These statements indicate technical development resources, but no specific patents, new-product records, or quantified R&D results are supplied.

Production capacityThe supplier reports four production lines, 31–40 quality-control staff, and annual output of 1,000,000 valve stem seals, 10,000,000 O-rings, 10,000,000 oil seals, 1,000,000 bonded seals, and 10,000,000 customized molded rubber parts. Its listed products and factory certifications further support manufacturing capability, although capacity utilization and independent verification are not shown.

Customization capabilityThe supplier states that its technical team can customize rubber raw-material formulas and that it has an in-house mold department capable of fast mold processing and difficult molds. Its product scope explicitly includes customized molded rubber parts, providing direct evidence of customization capability.