Nationwide Pick-Up - Rainbow Vacuum Repair Service

D4 SE (Special Edition) Exhaust Cover Gasket

D4 SE (Special Edition) Exhaust Cover Gasket D4 SE (Special Edition) Exhaust Cover Gasket
Low Price Guarantee - RainVac
Price: $3.32 USD
$100+ Orders Ship Free (48 states only)

Brand: Rainbow®
Manufacturer: Rexair
Item Number: R4148
Condition: New
Availability: In Stock
Warranty: 3 Years

O-ring for the R3845 exhaust cover. Helps prevent air from escaping if you are using the R4176 non-wettable adaptor.

OEM - Original Equipment Manufacturer 30 Day Money Back Guarentee Low Price Guarantee - RainVac

write a review

Only reviews from customers that have ordered this item from RainVac will be published.

Note: HTML is not translated!

Rating: Bad Good

Enter the code in the box

Exhaust Cover, D4, v2
0 review(s)

D4 Version Two Exhaust Cover

OEM - Original Equipment Manufacturer
Brand: Rainbow®
Manufacturer: Rexair
Item Number: R3845
Availability: Discontinued
Online Price: Discontinued

Exhaust cover for the screw in style late version D4 and D4 (Special Edition) main housing. Improved design that prevents breaking and easy removal. Insert hose in this port to blow air with your Rainbow.

In the fourth quarter of 1990, the main housing was updated to accept this new exhaust cover.

This item is effective serial number 6878827. Previous item number is R2708, for original version D4 main housing.

Non-Wettable Foam Filter
1 review(s)

Rainbow D4C Version 2 Foam Filter

OEM - Original Equipment Manufacturer
Brand: Rainbow®
Manufacturer: Rexair
Item Number: R4176
Availability: Discontinued
Condition: New
Online Price: Discontinued

This filter fits the late version D4 and the D4 SE (Special Edition) Rainbow.

Use the Non-Wettable Adaptor to aid in the removal of certain inorganic materials that are resistant to the wetting action of water. These materials may be found near a fireplace, on concrete floors or in areas where recent construction projects have occurred.

This foam filter should be used on a temporary basis when there is evidence of inorganic, water resistant materials escaping the machine.

Materials that would fall into that category include:

  • fly ash
  • carbonates (concrete, lime)
  • powdered calcium compounds (gypsum, plaster of paris)
  • powdered silicas (road dust)
  • oily substances

If in doubt, please contact the manufacturer for information regarding specific applications.

Instructions For Use

  1. Remove exhaust cap from the Rainbow exhaust port.
  2. Insert Non-Wettable Adaptor into the cage portion of exhaust cap.
  3. Re-insert exhaust cap into exhaust port.
  4. Use Rainbow as directed in owner's manual.
  5. Remove Non-Wettable Adaptor and clean it with water after each use.


Because of their inability to absorb water, water resistant materials can raise the level of water in the water basin which could damage the machine. Extreme care should be taken to avoid overloading the water basin. Use of the optional 4 quart water basin is recommended for extreme conditions.

Customers Also Bought:

Image Item Name Item # Price
Exhaust Cover, D4, v2 D4 Version Two Exhaust Cover R3845


Quick View
Non-Wettable Foam Filter Rainbow D4C Version 2 Foam Filter R4176


Quick View

Ask Item Question

Enter the code in the box

Submit Question

  • US: 800-523-0510
  • Int: +1 301 791 9669
Shopping Cart 0 item(s) - $0.00 USD
Your shopping cart is empty!
$100+ Orders Ship Free (48 states only)
30 Day Money Back Guarantee



Everyone in your family, including those with asthma and allergies, will appreciate the Rainbow® Cleaning System.

Independent laboratory testing has scientifically proven:



The Rainbow® Cleaning System provides certified air cleaning to your home environment.

The Association of Home Appliance Manufacturers (AHAM) certifies that the Rainbow is a proven air cleaner designed to reduce air pollutants that contribute to poor indoor air quality.



The Rainbow® Cleaning System has been evaluated by an independent testing laboratory and has met carpet industry standards for all three elements:

Powerful revolving brushes lift and groom every fiber of your carpet on a cushion of air, leaving it looking like new. The Rainbow does a great job cleaning your carpeting without harming it!

Buy Now, Pay Later Finance Options

PayPal Credit

PayPal Credit

Borrow $99 or more... 19.99% APR Normal Credit

Special offers possible
You may be elegible for offers such as; No Payments + No interest if paid in full in 6 months

To take advantage of PayPal Credit, simply choose the "PayPal Credit" option during checkout.

More Information...

Blispay Credit

Blispay Credit

No Payments, No Interest on purchases over $199 if paid in full in 6 months
Get 2% Cash Back Automatically
Blispay gives you 2% Cash Back on all purchases. The more you shop, the more you earn!

To take advantage of Blispay Credit, simply click "Apply Now" and use your digital Blispay Credit card at checkout!

Apply Now