Vacuum Equipment Airtight O-ring
- YiDa
- Dalian,China
- 15-20 days
- 2 billion/year
1. Completely adaptable customization features: Direct assistance for big-diameter vacuum flange rings, NBR fencing vacuum sealing rings, square sealing rings completely.
2. 2D/3D visualization aid: Customers only have to share their design; we then convert and supply the related molding or cutting solutions.
3. Wide range of processing options: Besides the mold production, we also provide cutting services, and quick-response solutions for very big vacuum sealing rings.
Because vacuum furnaces and heat treatment equipment can reach very high temperatures while being operated under vacuum, normal Nitrile rubber (NBR) quickly hardens and breaks down, eventually causing leaks.
Yida’s Solution:
Step 1: Precise Material Selection
We don't depend on a single type of material for all the operating conditions. Yida provides options that are tiered on the basis of temperature range of your equipment:
Vacuum zones with low-to-medium temperature: High-grade NBR is used by us, considering cost-effectiveness and basic air tightness as main priorities.
High temperature vacuum furnace zones: Our recommendation is definitely a top grade Fluoroelastomer (FKM). The fluorine-carbon bonds in FKM are so stable, that they are practically immune to high temperature oxidation (with different temperature ranges depending on the formulation), leaving high vacuum O-rings physically flexible even after extended high temperature exposure without being carbonized or cracking.
Step 2: 24-Hour Deep Post-Curing Process
To satisfy the vacuum industry's tough demands in terms of outgassing rates, our vacuum system O-rings and high-performance seals perform a thorough 24-hour deep post-curing process:
Dimensional stability and shrinkage prevention: The treatment releases the internal stress produced in compression molding. It guarantees that the O-rings will not undergo stress relaxation or a large dimensional shrinkage due to heat exposure during the operation of the equipment, thus keeping the sealing compression force unchanged.
Technical Specifications：
| Attribute Name | Details |
| Processing Service | Cutting/Molding |
| Brand Name | Yida / EDA |
| Model Number | As per client's drawings |
| Available Materials | Silicone rubber, NBR (Nitrile), FKM (Fluororubber) |
| Hardness Range | 20°–90° Shore A; other hardness levels available upon request |
| OEM/ODM Service | Customizable wire diameters, inner diameters, and thicknesses; available via precision cutting or mold-based production |
| Color | Standard colors: Black, brown, green; custom colors available upon request |
| Operating Temperature | Silicone rubber: -60°C to 220°C |
| Nitrile (NBR): -30°C to 100°C | |
| Fluoroelastomer (FKM): -40°C to 260°C | |
| Shape | Customizable shapes |
| Size | Standard specifications or custom-made to drawing dimensions |
| Tolerance Standard | Made to customer specifications |
| Quality | 100% inspection |
| Design Format | 2D & 3D drawings available |
| Compression Set | Silicone rubber: 15% - 30% (150°C x 22h) Nitrile rubber (NBR): 20% - 40% (100°C x 22h) Fluororubber (FKM): ≤ 20% (200°C x 22h) |
| Tensile Strength and Elongation at Break | Silicone rubber: Tensile strength: 5–10 MPa (relatively low strength), Elongation: 100%–400% Nitrile rubber (NBR): Tensile strength: 12–20 MPa (generally offers the best tear and abrasion resistance among the three), Elongation: 200%–500% Fluororubber (FKM): Tensile strength: 10–15 MPa, Elongation: 150%–300% |
| Fluorine Content/Grade (applies to FKM only) | Grade A (Standard type, fluorine content approx. 66%): Grade B (Chemical-resistant type, fluorine content approx. 68%): Grade F / GF (High-fluorine type, fluorine content approx. 70%): Grade GLT / GBLT (Low-temperature type): |
| Supports Common International Standards | Covers the full spectrum of O-ring sizes that are compatible with Chinese (GB) and American (ASTM/AS568) standards; we also offer tailor-made versions for large-diameter vacuum flange rings, uniquely shaped vacuum seals, and square vacuum seals. |
| Performance Characteristics | Low gas permeability; suitable for low, medium, and high vacuum applications; excellent airtightness is kept for ensuring stable vacuum levels in equipment. |
| Main Application Areas | Applications: Vacuum coating machines, vacuum drying ovens, vacuum furnaces, vacuum packaging equipment, vacuum systems, vacuum piping, laboratory vacuum instruments, semiconductor vacuum equipment, negative-pressure automation equipment, industrial vacuum chambers, and other types of equipment that need high-integrity vacuum environments. |
| Warranty | Warranty: Under recommended storage conditions (temperature <30°C, humidity <70%, away from direct light), unopened products that fail due to material aging (not caused by human error) within 3 years of delivery will be replaced free of charge upon verification. The warranty does not cover failures resulting from improper installation or use outside specified limits. |
| Production Capacity | Monthly production capacity exceeds 300 tons. |
| Lead Time | Standard sizes: 15 days after order confirmation. Average lead time for prototypes or initial samples is 1–2 weeks; mold fabrication takes 10 days if required; average lead time for mass production after sample approval is 2–3 weeks. |
| Packaging | Packed in PE bags, then in cartons |
| Selling Units | Single unit / 1 pc |
| Single Package Size | As per the buyer's request |
| Single Gross Weight | As per the buyer's request |
| Shipping Method | By sea, air, or express |
| Port of Loading | Dalian Port or as per the buyer's request |
| Certificates | IATF 16949 (Automotive Quality Management System) |
| AS9100D (Aerospace Quality Management System) | |
| ISO 14001 | |
| ISO 9001 | |
| RoHS 2.0 |
Technical Advantages of Vacuum Seal Rings:
Material purity in vacuum sealing is really the main element that sets the final pressure limit of a system. Yida vacuum-grade O-rings are engineered with molecular stability and dimensional accuracy as the primary aim. Through a rigorous secondary vulcanization process, we can almost eliminate outgassing from our FKM seals, making them a reliable sealing solution for low, medium, and high-vacuum equipment.
Utilizing our mold machining center as well as a highly experienced team of more than 20 years, coupled with Makino machining centers and EDM equipment, we are able to keep mold accuracy to 0.005 mm, thus physically ensuring structural stability.
We also equipped a visual inspection system empowered by AI for performing a triple-layer closed-loop quality control process: full material performance testing (CPK/SC/MSA), 2D dimensional measurement, and human evaluation. This technologically advanced quality management is performed at the micron-level and.its range encompasses the deepest defects at which the human eye can no longer discern up to the macroscopic surface features.
Applications:
It is highly compatible with machinery that require a high vacuum integrity environment, for example vacuum coating machines, vacuum drying ovens, vacuum furnaces, vacuum packaging equipment, vacuum systems, vacuum piping, laboratory vacuum instruments, semiconductor vacuum equipment, negative-pressure automation equipment, and industrial vacuum chambers.
About Yida:
Yida was established in 1993, and it is a manufacturing company with more than 20 years of experience in the industrial rubber field. Our main office is in Dalian, and we have also set up overseas production units in Japan and Vietnam, thus forming a worldwide delivery network. We have more than 450 employees and a 37,000-square-meter production plant with a monthly production capability of over 300 tons.
Our extensive collection of more than 1,000 verified formulation materials enables us to accurately reproduce even the most complex manufacturing processes. At present, Yida’s sealing products of high standards are being trusted suppliers to principal worldwide industrial markets like the US, Germany, Saudi Arabia, Russia, Japan, and France.
Quality Assurance:
Yida has acquired ISO 9001 and ISO 14001 certifications. In addition, we have the "passports" to high-end manufacturing: i.e. we are qualified for IATF 16949 (automobile industry) and AS9100D (civil aviation) quality management system certificates (AS9100D Certificate No.: 19318).
Besides, practically our entire product range is RoHS 2.0 compliant, and we have UL and NSF/WRAS certified items that are specifically designed to provide food-grade safety, environmentally friendly, and correspond to a specialized flame retardant level.
Key Partners:
Yida constantly supplies dependable products and services to customers worldwide in the fields of industrial manufacturing, automation control, new energy, electrical equipment, and automotive components. We have also developed long-term partnerships with many well-known international enterprises. Our customers are involved in a variety of industries including automotive electronics, industrial automation, intelligent manufacturing, new energy, power equipment, and fluid control. Some of the major companies featured in our client base are Delphi Technologies, Alpine Electronics, Nidec, Siemens, Panasonic, Omron, SMC Corporation, CATL, China Electric Equipment Group, and Rongke Power.
Logistics & Packaging:
Shipping Solutions: To deliver an optimized logistics chain, we flexibly coordinate sea, air, or cross-border land transport according to your delivery timeline and budget requirements.
Custom Packaging: To help promote your brand, we provide custom-printed PE bags (with logos/model numbers), branded outer carton labeling, and colored interlayer dividers. These elements not only boost your brand image but also make it easier for a quick visual identification in your warehouse environment.
Order Delivery & Prototyping:
Minimum Order Quantity (MOQ): Starts at 1,000 units.
Sample Service: Free samples available (shipping costs borne by the buyer).
Lead Times:
Standard Specifications: Shipment within 15 days of order confirmation.
R&D/Customization: On average, the turnaround time for prototype production is 1-2 weeks; molding development needs 10 days; and after the sample approval, mass production normally takes 2-3 weeks.
After-Sales Commitment:
We offer an extended 3-year product warranty. If unopened products experience material degradation or failure within 3 years of delivery—provided they are stored under recommended conditions (temperature <30°C, humidity <70%, away from direct light)—Yida will provide a full, free replacement upon verification.
Exhibition Highlights:
2025 Dalian International Industrial Expo
Under the concept of "Digital-Intelligent Sealing," Yida introduced a series of high-performance rubber products mainly designed to the various difficult conditions of use in a digitally integrated manufacturing environment. Besides, Yida also discussed supply chain collaboration with 900 worldwide industrial companies.
2025 Shanghai Long-Duration Energy Storage Expo
In conjunction with worldwide "Dual Carbon" targets, we have given attention to production of long-life sealing components for next-generation power systems. Such parts are capable of withstanding very high temperatures and various chemicals, thus provide a very effective solution to the problem of maintaining airtightness of energy storage systems which used to be a major stress factor in harsh environments.
