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Centering Rings

Centering Rings are used to concentrically align small tubes inside bigger ones. They can be used as motor blocks to prevent an engine from sliding forward into the parachute compartment of your rocket.

Low Power | High Power | Cardstock for Custom Rings | Rings-O-Plenty

Centering Rings for Low-Power Rockets
Type P/N

Qty
/Pack

 Price I.D.
(inch)		 O.D.
(inch)		 Length
(inch)		 Wt. (g) Material Place Order Now
Engine Block EB-10 13041 6 $1.39 .329 .412 .125 .06 Yellow
Paper
Centering Ring 10-13
(Can be used as an Engine Block for 13mm motors)		 13021 6 $1.79 .453 .510 .188 .11 Green Paper
Centering Ring 10-18 13024 6 $2.24 .453 .704 .188 .49 Green Paper
Centering Ring 10-18L 13027 4 $1.87 .453 .704 .50 1.28 Green Paper
Centering Ring 10-24 15002 6 $1.56 .453 .945 .04 .10 Die-Cut
Cardboard
Centering Ring 13-18
(Can be used as an Engine Block for 18mm motors)		 13028 6 $2.34 .549 .700 .25 .44 Blue Paper
Centering Ring 18-24
(Can be used as an Engine Block for 24mm motors)		 13032 6 $2.51 .740 .945 .25 .76 Green Paper
Centering Ring 18-29 13036 6 $2.67 .740 1.134 .25 1.64 Blue Paper
Centering Ring 24-29
(Can be used as an Engine Block for 29mm motors)		 13037 6 $2.86 .982 1.134 .25 .76 Green Paper
Centering Ring 24-56
(fits BT-70 Tubes)		 15026 4 $6.67 .982 2.174 .048 1.8 Die-Cut
Cardboard
  This ring set also includes 2 bulkhead disks that fit inside Airframe Coupler AC-56 (P/N 13042). Read the related article on how to use bulkheads in your rocket designs
(Click Here).
Centering Ring 24-66
(fits BT-80 Tubes)		 15028 6 $6.85 .982 2.552 .048 2.7 Die-Cut
Cardboard
DCR 24/41.6
(BT 50/BT 60)		 15016 6 $4.41 .982 1.589 .048 .725 Die-Cut
Cardboard

Centering Rings for High-Power Rockets
Type P/N

Qty
/Pack

 Price I.D.
(inch)		 O.D.
(inch)		 Length
(inch)		 Wt. (g) Material Place Order Now
Centering Ring 24-54 13207 2 $4.75 .982 2.134 .375 4.0 Plywood
Centering Ring 24-2.56"
(LOC P/N CR-24-63)		 13213 2 $5.80 .982 2.554 .125 5.6 Plywood
Centering Ring 24-75 13219 2 $6.95 .982 2.994 .125 8.8 Plywood
Centering Ring 29-38 13205 4 $4.20 1.146 1.519 .5 3.3 Paper
Centering Ring 29-54 13209 2 $4.75 1.146 2.134 .125 3.1 Plywood
Centering Ring 29-2.56"
(LOC P/N CR-29-63)		 13215 2 $5.80 1.146 2.554 .125 4.9 Plywood
Centering Ring 29-75 13221 2 $6.95 1.146 2.994 .125 16.6 Plywood
Centering Ring 29-98 13227 2 $8.10 1.146 3.894 .125 26.7 Plywood
Centering Ring 38-54 13211 2 $4.75 1.641 2.134 .125 3.8 Plywood
Centering Ring 38-2.56"
(LOC P/N CR-38-63)		 13217 2 $5.80 1.641 2.554 .125 8.0 Plywood

Centering Ring 38-75 13223 2 $6.95 1.641 2.994 .125 12.6 Plywood
Centering Ring 38-98 13229 2 $8.10 1.641 3.894 .125 24.0 Plywood
Centering Ring 38-5.38" 13235 1 $6.45 1.641 5.374 .125 55.7 Plywood
Centering Ring 38-7.51 13243 1 $9.80 1.641 7.509 .125 109.9 Plywood
Centering Ring 54-75 13225 2 $6.95 2.266 2.994 .25 7.7 Plywood
Centering Ring 54-98 13231 2 $8.10 2.266 3.894 .25 22.8 Plywood
Centering Ring 54-5.38" 13237 1 $6.55 2.266 5.374 .25 49.4 Plywood Sorry,
Back-ordered
(2/3/12)
Centering Ring 54-7.51" 13245 1 $9.80 2.266 7.509 .25 101.9 Plywood
Centering Ring 75-98 13233 2 $8.10 3.126 3.894 .25 11.4 Plywood
Centering Ring 75-5.38" 13239 1 $7.00 3.126 5.374 .25 40.1 Plywood
Centering Ring 75-7.51" 13247 1 $10.00 3.126 7.509 .25 97.0 Plywood
Centering Ring 98-5.38" 13241 1 $7.80 4.026 3.894 .25 24.5 Plywood
Centering Ring 98-7.51" 13249 1 $10.50 4.026 7.509 .25 77 Plywood

Premium Cardstock To Cut
Your Own Centering Rings!

Cardstock Sheet Dimensions:

8-1/2" X 11" X .048" thick

Centering Ring Cardstock

P/N: 44002
Price: $1.81 each sheet

Price: $1.81   Quantity:
Do you need a custom-sized ring to fit a spare tube you have? Or, do you want to save a ton of money over pre-cut rings? We now offer high-density cardstock that can be easily cut to create any size rings you need. This is the same high-quality cardstock that we use to make all the Apogee flat rings. It is stiff, strong (can be used to make rings even for high thrust G motors), and looks great! It can also be used for making fins on small diameter rockets, or to make the fin spacing and alignment guides that we recommend in the Building Skill Level 2 Model Rockets video book.This cardstock is coated with glossy white paper on both sides of the sheet, so it won't absorb paint like a sponge. You'll save money on paint, and you'll get a great finish with a minimal amount of effort.

Rings-O-Plenty

Rings-O-Plenty

P/N: 09521
Price: $16.07
Rings-O-Plenty bulk pak

You'll need extra centering rings and tube couplers to go with your "Tubes-O-Plenty", so here is a big bag of rings and things at a special price; you save $3.99! A rocket designer's wish come true! For dimensions, see the centering ring table listed above.Here is what you get - Even More Value!

Description P/N Qty. Reg. Price
CR 10.5-13
13021
6
 $1.74
CR 10.5-18
13024
6
 $2.17
CR 13-18
13028
6
 $2.34
CR 18-24
13032
6
 $2.44
CR 24-29
13037
4
 $1.85
Coupler 13mm
13014
3
 $1.51
Coupler 18mm
13015
3
 $1.61
Coupler 24mm
13009
3
 $1.72
Coupler 33mm
13017
2
 $1.25
Launch Lugs (1/4" X 3")
13057
3
 $1.45
Launch Lugs (1" long)
13052
12
 $1.64

Our regular price if bought separately: $19.59
The Rings-O-Plenty were recently updated to include the 33mm coupler.
They no longer contain the 29mm coupler.


Do you want tips for making dazzling rockets from your parts?
Video Book Collection Having Apogee's quality parts to work with is only one piece of the puzzle in making a stunning rocket. Now you need techniques and skills for assembling them into an eye-popping model. Our video books can show you the procedures and methods the experts use when they build rockets. Don't you want your rockets to be the center of attention?
Check out our video book collection (click here).

Actual Customer Comment:
"I would simply say your responsiveness, customer care and support are the best I have ever experienced. I can't help but feel that Tim and the people who work for him have a sincere interest in making their customers happy and having them be successful. To me it shows in every interaction I have ever had with Apogee. Again, thank you for the great products, top of the line quality and superior customer service provided by Apogee Components." -- Bob Schoner

This page last updated on: 2/3/12 1px Site Map 1px Contact Us 1px Website Issues?