Mechanical Seal Type Roten 877 for Lowara Pumps Mechanical Seals

• Customization: Available
• Structure: Double-End
• Pressure: High Pressure Mechanical Seals
• Model NO.: Queeny-Type 877
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Wear
• Standard: Standard
• Type: Queeny-Roten 877
• Balance: Balanced
• Delivery: 1 Week
• Package: Custom or Standard Box
• Transport: Air or Sea
• Quality Guarantee: 2 Years
• Transport Package: Customized
• Specification: Standard
• Trademark: Queeny
• Origin: China
• HS Code: 8484200090
• Production Capacity: 5000
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Parameter	Value/Description	Unit/Note
Model	Queeny-Type 877	High-pressure, double-mechanical seal for critical applications
Seal Type	Double Tandem Mechanical Seal with Barrier Fluid	Primary + secondary seals for zero-leakage containment
Face Materials	- Primary: Tungsten Carbide (TC) - Secondary: Silicon Carbide (SiC)	TC/TC for extreme abrasion resistance; SiC for chemical durability
Housing Material	Stainless Steel 316L (Heat-Treated)	Yield strength: ≥450 MPa; suitable for high-pressure environments
Pressure Range	0 - 5.0	MPa	Differential pressure: ≤3.5 MPa (barrier fluid system)
Shaft Diameter Range	50 mm - 120 mm	Large shaft compatibility for industrial machinery
Maximum Rotational Speed	4000	RPM	Dynamic balance grade: G2.5 (ISO 1940) for high-speed stability
Temperature Range	-30°C ~ 200°C	Elastomers: FFKM (standard); PME for cryogenic (-196°C, optional)
Leakage Rate	≤0.01 ml/h	Meets API 682 Type A standards for hazardous fluids
Installation Type	Cartridge-Mounted (Flange-Mounted Design)	Pre-aligned for easy integration with API 610 pumps
Elastomer Material	FFKM (Perfluoroelastomer)	Service life: 10,000+ hours in aggressive media
Standards Compliance	API 682, ISO 21049, ASME B73.1	Certified for refineries, chemical plants, and offshore platforms
Key Features	- Pressurized Barrier Fluid System - Auto-Adjusting Spring Load - Vibration Monitoring Ports	Redundant sealing for safety-critical applications (e.g., toxic fluids)

1. Are we a factory or a trading company?
We are a factory only producing mechanical seals and we have our own marketing department  and also home market. The main market is 50% in China and 50% in European countries where most pumps factories located, we mainly supply to pump factories.

2. What are the payment methods?
We accept T/T, Western Union, Paypal, Made in China as your convenience.

3. How long is the delivery time?
Products in stock will be shipped within 48 hours. Standard seal 1-2 weeks. Custom seals are 3-4 weeks.

4. Could you offer sample ?
Yes, the sample could be sent to you with freight charge paid at your destination.

5. About our packaging type?
We have 2 kinds of packaging, one is with our brand, another one is white blank . with enough quantity, we could use your own logo in the package after your logo authorization.

6.I can not find our products in your catalog ,can you make customized products for us ?
Yes ,Customized products is available . Also, We have been adding new seals, there are many types we have not added in here yet, please send us the pump type or seals international code, we could identify the seals you need.