Oase Hosetail Flat Gasket 1½inch

Oase Hosetail Flat Gasket – 1½ Inch

Genuine Replacement Sealing Gasket for Compatible Oase Pumps, Filters, and UVC Units

The Oase Hosetail Flat Gasket – 1½ Inch is a genuine Oase replacement sealing component designed for compatible hosetail connections used across selected Oase pond pumps, filtration systems, and ultraviolet clarifiers. Identified by Oase part number 19491, this small but important spare part helps create a secure sealing surface between a compatible 1½-inch hosetail and the adjoining equipment connection.

Hosetail connections are commonly used to attach flexible pond hose to pumps, pressure filters, UVC clarifiers, and other water-circulation equipment. For the connection to remain properly sealed, the fitting usually relies on a correctly positioned gasket between the mating surfaces. When the connection is assembled, the flat gasket is compressed evenly to help prevent water from escaping around the joint.

Over time, an original gasket may become flattened, worn, stretched, hardened, damaged, or misplaced. This can happen during routine maintenance, filter cleaning, pump servicing, equipment relocation, or repeated removal of the hosetail fitting. Even when the hosetail and equipment housing remain in good condition, a worn or missing gasket may prevent the connection from sealing correctly.

Replacing the old seal with the genuine Oase Hosetail Flat Gasket can help restore the intended connection without requiring replacement of the complete hosetail assembly. This makes it a practical and economical spare part for maintaining compatible Oase pond equipment.

The gasket is designed to sit flat inside the appropriate sealing position. Once the hosetail or retaining connection is reassembled, the gasket is gently compressed between the two surfaces. This compression helps close the small spaces through which water might otherwise escape.

Because several Oase sealing rings and flat gaskets may look similar, it is important to identify the correct replacement using the equipment model and official part number rather than appearance alone. This product carries part number 19491 and is intended for compatible 1½-inch hosetail connections.

The gasket is suitable for a range of selected Oase equipment, including certain FiltoClear pressure filters, Vitronic UVC units, Bitron C clarifiers, Aquarius Universal pumps, and AquaMax Dry pumps. Compatibility may vary between equipment generations, so the model number and spare-parts diagram should be checked before ordering.

This replacement gasket is especially useful when investigating a small leak around a hosetail connection. If water appears around the joint, the equipment should be switched off and the connection inspected. The existing gasket may be incorrectly positioned, contaminated with grit, permanently compressed, cracked, or missing altogether.

Installing a new gasket can help where the leak is caused by a failed sealing component. However, the complete connection should also be examined for cracks, damaged threads, warped surfaces, or a broken hosetail. A replacement gasket cannot repair damage to the equipment housing or fitting itself.

Before installing the new gasket, both sealing surfaces should be cleaned carefully. Sand, dried residue, algae, grit, or fragments of an old seal may prevent the gasket from sitting evenly. The new gasket should be placed flat in the correct position without twisting, stretching, folding, or trapping it outside the sealing area.

The connection should then be reassembled carefully and tightened evenly. Excessive force should be avoided because overtightening may distort the gasket, damage the fitting, or place unnecessary pressure on the equipment housing.

The Oase Hosetail Flat Gasket is also useful as a preventative maintenance spare. Small seals can easily be dropped or misplaced when pond equipment is dismantled. Keeping a correctly identified spare available can help prevent unnecessary delays when a filter, pump, or UVC needs to be returned to operation.

Whether replacing a damaged original seal, servicing a pressure filter, reconnecting a UVC clarifier, or restoring a leaking pump connection, the genuine Oase Hosetail Flat Gasket – 1½ Inch provides a simple and dependable replacement for compatible Oase equipment.

Features

• Genuine Oase replacement spare part
• Designed for compatible 1½-inch hosetail connections
• Flat sealing-gasket configuration
• Helps create a sealed connection between compatible components
• Suitable for selected Oase pumps, filters, and UVC units
• Useful when the original gasket is worn, damaged, or missing
• Allows a serviceable hosetail assembly to be reused
• Suitable for routine servicing and connection repairs
• Compact spare part that is easy to keep for maintenance
• Oase part number 19491

Confirmed Compatible Oase Products

The gasket is listed for the following selected Oase products:

Oase FiltoClear Pressure Filters

• Oase FiltoClear 3000
• Oase FiltoClear 6000
• Oase FiltoClear 11000
• Oase FiltoClear 15000

Oase Vitronic UVC Clarifiers

• Oase Vitronic 18W
• Oase Vitronic 24W
• Oase Vitronic 36W
• Oase Vitronic 55W

Oase Bitron C UVC Clarifiers

• Oase Bitron C 18W
• Oase Bitron C 24W

Oase Aquarius Universal Premium Eco Pumps

• Oase Aquarius Universal Premium Eco 3000
• Oase Aquarius Universal Premium Eco 4000

Oase Aquarius Universal Premium Pumps

• Oase Aquarius Universal Premium 5000
• Oase Aquarius Universal Premium 6000
• Oase Aquarius Universal Premium 9000
• Oase Aquarius Universal Premium 12000

Oase AquaMax Dry Pumps

• Oase AquaMax Dry 6000
• Oase AquaMax Dry 8000
• Oase AquaMax Dry 14000
• Oase AquaMax Dry 16000

Equipment designs can vary between model generations. Confirm part number 19491 against the equipment manual, exploded parts diagram, or existing original gasket before purchase.

When to Replace the Gasket

Inspect or replace the gasket when:

• Water is leaking around a compatible hosetail connection
• The original seal is missing after maintenance
• The gasket appears permanently flattened
• The gasket is cracked, split, or torn
• The seal has become stretched or distorted
• The gasket no longer sits evenly in position
• The hosetail has been removed and refitted several times
• A pump, filter, or UVC is undergoing routine servicing
• A second-hand Oase unit is being restored
• A spare seal is needed for future maintenance

A leak can also be caused by a damaged fitting, cracked housing, loose retaining component, dirty sealing surface, or incorrect assembly. Inspect the entire connection before deciding that the gasket is the only component requiring replacement.

How It Works

The flat gasket is positioned between the compatible hosetail and the corresponding equipment connection.

When the fitting is assembled, the gasket is compressed evenly between the mating surfaces. This compression helps create a barrier around the joint and reduces the possibility of water escaping through small gaps.

For effective sealing, the gasket should:

• Match the correct Oase part number
• Sit flat in the intended sealing position
• Remain clean and undamaged
• Be free from twists or folds
• Be compressed evenly during assembly
• Be used with an undamaged hosetail and equipment housing

The gasket is a sealing component only. It cannot repair cracked plastic, damaged threads, warped fittings, or broken equipment connections.

Installation Instructions

1. Switch off and electrically isolate the connected equipment.
2. Stop the water flow through the pump, filter, or UVC.
3. Drain the relevant connection where necessary.
4. Carefully remove the existing hosetail fitting.
5. Locate and remove the old gasket.
6. Confirm that the replacement is Oase part number 19491.
7. Inspect the hosetail, retaining component, and equipment housing.
8. Clean both mating surfaces thoroughly.
9. Remove grit, residue, algae, or fragments of the old seal.
10. Position the new gasket flat in the correct sealing location.
11. Ensure the gasket is not twisted, stretched, or folded.
12. Refit the hosetail or retaining connection carefully.
13. Tighten the connection evenly without excessive force.
14. Restore the water flow and inspect the joint for leakage.
15. Switch the equipment back on after confirming correct assembly.
16. Recheck the connection after the system has been operating.

Always follow the servicing and installation instructions supplied with the specific Oase product.

Maintenance Tips

Keep the Sealing Surfaces Clean

Even a small amount of grit or dried residue can prevent the gasket from sitting evenly. Clean the connection before fitting the replacement.

Inspect the Complete Connection

Check the hosetail, thread, retaining collar, and equipment housing. A new gasket will not stop leakage caused by a cracked or damaged component.

Avoid Reusing a Damaged Seal

Do not reinstall a gasket that is cracked, hardened, stretched, badly compressed, or permanently deformed.

Do Not Overtighten

Excessive tightening may distort the gasket or damage the surrounding plastic components. Assemble the connection according to the equipment instructions.

Keep a Spare Available

The gasket is small and may be misplaced during servicing. Keeping a spare part number 19491 can make future maintenance easier.

Product Specifications

Brand: Oase
Product Name: Oase Hosetail Flat Gasket 1½ Inch
Part Number: 19491
Product Type: Replacement flat sealing gasket
Connection Application: Compatible 1½-inch hosetail connections
Product Status: Genuine Oase spare part
Suitable Equipment Types: Selected pumps, filters, and UVC clarifiers
Primary Function: Sealing a compatible hosetail connection
Suitable Uses: Replacement, servicing, maintenance, and leak investigation

Ideal For

• Oase FiltoClear filter maintenance
• Oase Vitronic UVC servicing
• Oase Bitron C maintenance
• Oase Aquarius Universal pump connections
• Oase AquaMax Dry pumps
• Compatible 1½-inch hosetail connections
• Replacing a lost or damaged original seal
• Investigating water leakage around a joint
• Routine pond-equipment servicing
• Professional pond-maintenance teams
• Oase equipment owners
• Keeping as an emergency spare

Related Oase Hose Connection Parts

When replacing an Oase hosetail gasket, check the matching hosetail and threaded connection at the same time so the full joint seals correctly.

• For the matching smaller Oase hosetail, see the Oase Stepped Hosetail 1½ Inch.
• For larger Oase hose connections, see the Oase Stepped Hosetail 2 Inch and Oase Hosetail Flat Gasket 2 Inch.
• Browse hose fittings and connectors.