Special Oil Seals for Extreme Conditions
*Small Orders Accepted | Fast Delivery
Global business, never absent.
SinoUnitedSeals，The preferred leader enterprises.
Southeast Asia region
#Major market with large demand, fast turnover and reliable payments.
Southeast Asia is one of our most important export markets. We supply high-quality oil seals for automotive, engineering machinery, hydraulic systems and industrial equipment. With fast logistics from Tianjin Port, we ensure stable quality, on-time delivery and flexible order quantity to support your local market growth.
The Middle East region
#High-profit market focusing on special seals for extreme conditions.
The Middle East is our key high-end market for special oil seals. We provide high-temperature, corrosion-resistant and heavy-duty seals suitable for desert machinery, construction equipment and industrial systems. All products are designed for harsh working environments with stable performance and long service life.
North America region
#Standardized market with large orders and high-quality requirements.
North America is our major market for standardized automotive, agricultural and hydraulic oil seals. We strictly follow international quality standards to ensure high precision, reliability and consistency. With mature logistics channels from Tianjin Port, we support large batch orders and long-term stable supply.
European region
#High-end market for precision, high-speed and high-pressure seals.
Europe is our high-end market focusing on precision seals, high-speed rotary seals and high-pressure oil seals. Our products are widely used in advanced industrial equipment, automation systems and mechanical engineering. We comply with strict quality requirements and provide professional solutions for European customers.
Professional oil seal solutions for extreme working conditions.
We focus on designing and manufacturing high-performance special oil seals for high temperature, high speed, high pressure, corrosion resistance and other severe applications.
Oil Seals
Premium sealing solutions for engines, gearboxes and heavy‑duty machinery.
- ✓ Ultra-high temperature stability up to 220°C
- ✓ Leak-proof design for maximum equipment protection
- ✓ Extended lifespan to reduce maintenance cost
- ✓ Compatible with all kinds of oil and fuel
O-Rings
Universal precision sealing for hydraulic, pneumatic and automotive systems.
- ✓ Perfect elasticity & zero leakage under pressure
- ✓ Wide material range for any working environment
- ✓ Wear-resistant & anti-aging for long-term use
- ✓ Available in standard & custom sizes
Hydraulic Seals
Heavy-duty sealing kits for excavators, loaders and hydraulic cylinders.
- ✓ Extreme pressure resistance without deformation
- ✓ Low friction & high efficiency for cylinders
- ✓ Complete seal kits for one-stop purchase
- ✓ Stable performance in harsh working sites
Mechanical Seals
Reliable seals for pumps, motors, compressors and chemical equipment.
- ✓ Zero leakage even in corrosive environments
- ✓ High stability under high pressure & high speed
- ✓ Easy installation & lower replacement frequency
- ✓ Long service life to reduce downtime
Gaskets & Sheet Gaskets
Durable gaskets for engines, pipelines, flanges and pressure vessels.
- ✓ Superior compression & no rebound loss
- ✓ High temperature & high pressure resistance
- ✓ Wide material selection for all industries
- ✓ Custom sizes available for any project
Valve Seals
High-performance valve stem seals for engines, cars and motorcycles.
- ✓ Perfect oil control to reduce oil consumption
- ✓ High-speed stability & anti-vibration
- ✓ Aging resistance for long engine life
- ✓ Precision fit for OEM-level quality
Wiper Seals & Dust Seals
Ultimate dust protection for cylinders and construction machinery.
- ✓ 100% dust & sand exclusion
- ✓ Scratch-resistant & no damage to piston rods
- ✓ Extend cylinder service life significantly
- ✓ Perfect fit for heavy-duty machines
Custom Seals
Professional custom sealing solutions for special applications.
- ✓ Fully customized based on drawing or sample
- ✓ Small MOQ for trial & small projects
- ✓ Professional engineering support
- ✓ Fast sampling & on-time delivery
Request a Quote
Fill out the form below and we'll get back to you within 24 hours.
3 Steps
to Quickly Start Batch Order:
Step 1 Send inquiry & confirm details
Send us seal model, material, quantity, and destination.We will provide official quotation & lead time.
Step 2 Confirm order & 30% deposit
Confirm quotation, sign PI (Proforma Invoice).Start production after receiving 30% deposit.
Step 3 Balance payment & delivery
Finish production → take photos/videos for inspection.Pay 70% balance → arrange shipment by sea/air/express.