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Each oil seal product comes from details

Smart Shopping Starts Here

Q1: How do I select the right seal for my equipment?

→ Focus on 4 key factors:
① Shaft size (measure with calipers)
② Operating temperature (we offer -40°C to 230°C options)
③ Fluid type (oil/water/special chemicals)
④ Operating pressure(measure or provide pump model)

Q2: What preparation is needed before installation?

→ For professional installers:
1. Verify shaft dimensions match seal specs (tolerance ±0.1mm)
2. Clean shaft with a non-linting cloth or other
3. Inspect seal lip for damage (pre-lubrication recommended)
Critical: Avoid sharp edges on shafts/housings

Q3: How do you test seal quality?

→ Our 3-layer quality process:
① Automated production with data monitoring
② Pressure simulation testing* (by our custom-built rigs)
③ Visual reinspection by senior technicians
Note: Tests simulate real-world conditions

Q4: What if I encounter leaks after installation?

→ We’ve got your back:
1. Email failure details + photos/videos within 30 days
2. We analyze and respond within 48hrs
3. If confirmed defective:
→ Free replacement shipped in 72hrs (tracked shipping)
→ Typical delivery: 10-18 days globally
Note: Installation/operation errors not covered

Q5. How accurate are your size charts for standard seals?

→ Standard seals cover 80% industrial shafts (5mm~300mm).
If your specs don't match:
✓ Low-quantity custom orders: 500pcs min.
✓ Special designs: Contact for feasibility & lead time

Q6. How fast do you ship standard orders?

→ Efficient fulfillment:
✓ Same-day dispatch: Orders placed before 16:30 Beijing Time (Mon-Sat)
✓ 1000+ standard SKUs: 98.7% in-stock rate
✓ Custom orders: Production starts within 48hrs of approval
Note: Delivery varies by project complexity
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DMHUI

Hydraulic Piston Pump A4VTG90 Repair Seal Kit with 50x80x7mm Pressure Oil Seal

$62.89 USD
$99.85 USD $62.89 USD
Sale Sold out
Shipping calculated at checkout.
View full details

WE ONLY PRODUCE HIGH QUALITY OIL SEAL

We Build Seals That Earn Your Trust
For 43 years, one rule remains unbroken: We only produce high quality oil seals.
Every day, we test materials, measure tolerances, verify pressure limits, and refine processes—
so your equipment runs longer, and you sleep better.

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